\n \n \n \n energy,\n \n \n \n \n \n photosynthesis,\n \n \n \n \n \n water,\n \n \n \n \n \n food,\n \n \n \n \n \n light,\n \n \n \n \n \n temperature,\n \n \n \n \n \n density,\n \n \n \n \n \n gases,\n \n \n \n \n \n oxygen,\n \n \n \n \n \n liquids,\n \n \n \n \n \n solids,\n \n \n \n \n \n carbon dioxide,\n \n \n \n \n \n absorption,\n \n \n \n \n \n growth,\n \n \n \n \n \n volume,\n \n \n \n \n \n glucose,\n \n \n \n \n \n chemical energy,\n \n \n \n \n \n sound,\n \n \n \n \n \n particles,\n \n \n \n \n \n sperm,\n \n \n \n \n \n movement,\n \n \n \n \n \n experiment,\n \n \n \n \n \n cells,\n \n \n \n \n \n equation,\n \n \n \n \n \n respiration,\n \n \n \n \n \n respire,\n \n \n \n \n \n substance,\n \n \n \n \n \n substances,\n \n \n \n \n \n compression,\n \n \n \n \n \n properties,\n \n \n \n \n \n reaction,\n \n \n \n \n \n matter,\n \n \n \n \n \n human,\n \n \n \n \n \n earth,\n \n \n \n \n \n health,\n \n \n \n \n \n electricity,\n \n \n \n \n \n roots,\n \n \n \n \n \n energy transfer,\n \n \n \n \n \n fetus,\n \n \n \n \n \n digestion,\n \n \n \n \n \n diet,\n \n \n \n \n \n elements,\n \n \n \n \n \n minerals,\n \n \n \n \n \n life processes,\n \n \n \n \n \n plant growth,\n \n \n \n \n \n soil,\n \n \n \n \n \n electrical,\n \n \n \n \n \n plants,\n \n \n \n \n \n light energy,\n \n \n \n \n \n air,\n \n \n \n \n \n chemical reactions,\n \n \n \n \n \n environment,\n \n \n \n \n \n fossil fuels,\n \n \n \n \n \n heat,\n \n \n \n \n \n sex cells,\n \n \n \n \n \n ova,\n \n \n \n \n \n circuit diagram,\n \n \n \n \n \n force,\n \n \n \n \n \n compound,\n \n \n \n \n \n combustion,\n \n \n \n \n \n products,\n \n \n \n \n \n weight,\n \n \n \n \n \n heat energy,\n \n \n \n \n \n pollution,\n \n \n \n \n \n hormones,\n \n \n \n \n \n uterus,\n \n \n \n \n \n Sun,\n \n \n \n \n \n lungs,\n \n \n \n \n \n nervous system,\n \n \n \n \n \n reactions,\n \n \n \n \n \n acid rain,\n \n \n \n \n \n acid precipitation,\n \n \n \n \n \n electrical energy,\n \n \n \n \n \n reflection,\n \n \n \n \n \n solar energy,\n \n \n \n \n \n melting,\n \n \n \n \n \n metal,\n \n \n \n \n \n acid,\n \n \n \n \n \n brain,\n \n \n \n \n \n pressure,\n \n \n \n \n \n structure,\n \n \n \n \n \n sound energy,\n \n \n \n \n \n compounds,\n \n \n \n \n \n factors,\n \n \n \n \n \n particle,\n \n \n \n \n \n fertilization,\n \n \n \n \n \n body,\n \n \n \n \n \n carbohydrates,\n \n \n \n \n \n sperm cell,\n \n \n \n \n \n chlorophyll,\n \n \n \n \n \n metals,\n \n \n \n \n \n batteries,\n \n \n \n \n \n stimulus,\n \n \n \n \n \n large intestine,\n \n \n \n \n \n excretion,\n \n \n \n \n \n esophagus,\n \n \n \n \n \n stomach,\n \n \n \n \n \n small intestine,\n \n \n \n \n \n pancreas,\n \n \n \n \n \n conduction,\n \n \n \n \n \n magnesium oxide,\n \n \n \n \n \n speed,\n \n \n \n \n \n oil,\n \n \n \n \n \n wind energy,\n \n \n \n \n \n coal,\n \n \n \n \n \n nutrition,\n \n \n \n \n \n proteins,\n \n \n \n \n \n mass,\n \n \n \n \n \n distance,\n \n \n \n \n \n gravity,\n \n \n \n \n \n orbit,\n \n \n \n \n \n planets,\n \n \n \n \n \n medicines,\n \n \n \n \n \n corrosion,\n \n \n \n \n \n smelting,\n \n \n \n \n \n electrolysis,\n \n \n \n \n \n skeleton,\n \n \n \n \n \n muscles,\n \n \n \n \n \n tendons,\n \n \n \n \n \n skull,\n \n \n \n \n \n circuit,\n \n \n \n \n \n resistance,\n \n \n \n \n \n current,\n \n \n \n \n \n electric current,\n \n \n \n \n \n prey,\n \n \n \n \n \n mucus,\n \n \n \n \n \n enzymes,\n \n \n \n \n \n surface,\n \n \n \n \n \n biomass,\n \n \n \n \n \n fuel,\n \n \n \n \n \n renewable energy,\n \n \n \n \n \n renewable,\n \n \n \n \n \n nonrenewable,\n \n \n \n \n \n non-renewable,\n \n \n \n \n \n conversion,\n \n \n \n \n \n energy values,\n \n \n \n \n \n boiling,\n \n \n \n \n \n iron,\n \n \n \n \n \n transfer,\n \n \n \n \n \n testing,\n \n \n \n \n \n balance,\n \n \n \n \n \n equations,\n \n \n \n \n \n reproduction,\n \n \n \n \n \n reproductive system,\n \n \n \n \n \n testes,\n \n \n \n \n \n diffusion,\n \n \n \n \n \n exhale,\n \n \n \n \n \n inhale,\n \n \n \n \n \n breathing,\n \n \n \n \n \n ecosystem,\n \n \n \n \n \n survival,\n \n \n \n \n \n anus,\n \n \n \n \n \n waste,\n \n \n \n \n \n kinetic energy,\n \n \n \n \n \n body changes,\n \n \n \n \n \n mouth,\n \n \n \n \n \n condensing,\n \n \n \n \n \n freezing,\n \n \n \n \n \n melt,\n \n \n \n \n \n boil,\n \n \n \n \n \n condense,\n \n \n \n \n \n freeze,\n \n \n \n \n \n alloys,\n \n \n \n \n \n bones,\n \n \n \n \n \n solvents,\n \n \n \n \n \n habitats,\n \n \n \n \n \n rotation,\n \n \n \n \n \n mixtures,\n \n \n \n \n \n crude oil,\n \n \n \n \n \n petroleum,\n \n \n \n \n \n column,\n \n \n \n \n \n shape,\n \n \n \n \n \n theory,\n \n \n \n \n \n Particle theory,\n \n \n \n \n \n flow,\n \n \n \n \n \n factors affecting particles,\n \n \n \n \n \n model particle arrangement,\n \n \n \n \n \n insulation,\n \n \n \n \n \n thermal,\n \n \n \n \n \n brittle,\n \n \n \n \n \n shiny,\n \n \n \n \n \n dull,\n \n \n \n \n \n ovum,\n \n \n \n \n \n ovary,\n \n \n \n \n \n seeds,\n \n \n \n \n \n fish,\n \n \n \n \n \n flower,\n \n \n \n \n \n pollen,\n \n \n \n \n \n polar,\n \n \n \n \n \n magnetic,\n \n \n \n \n \n uses,\n \n \n \n \n \n absorb,\n \n \n \n \n \n cell,\n \n \n \n \n \n stem,\n \n \n \n \n \n leaves,\n \n \n \n \n \n root hairs,\n \n \n \n \n \n leaf,\n \n \n \n \n \n dense,\n \n \n \n \n \n non-metals,\n \n \n \n \n \n non-magnetic,\n \n \n \n \n \n insulator,\n \n \n \n \n \n conduct,\n \n \n \n \n \n period,\n \n \n \n \n \n embryo,\n \n \n \n \n \n menstruation,\n \n \n \n \n \n puberty,\n \n \n \n \n \n sex,\n \n \n \n \n \n PMS,\n \n \n \n \n \n premenstrual syndrome,\n \n \n \n \n \n pre-menstrual syndrome,\n \n \n \n \n \n solar,\n \n \n \n \n \n moon,\n \n \n \n \n \n solar system,\n \n \n \n \n \n color,\n \n \n \n \n \n non-luminous,\n \n \n \n \n \n gravitational pull,\n \n \n \n \n \n cytoplasm,\n \n \n \n \n \n nucleus,\n \n \n \n \n \n vacuole,\n \n \n \n \n \n camel,\n \n \n \n \n \n tire,\n \n \n \n \n \n atoms,\n \n \n \n \n \n food production,\n \n \n \n \n \n species,\n \n \n \n \n \n bacteria,\n \n \n \n \n \n groups,\n \n \n \n \n \n agriculture,\n \n \n \n \n \n weather,\n \n \n \n \n \n adaptation,\n \n \n \n \n \n plant respiration,\n \n \n \n \n \n formation,\n \n \n \n \n \n balanced,\n \n \n \n \n \n friction,\n \n \n \n \n \n balanced forces,\n \n \n \n \n \n driving,\n \n \n \n \n \n cold,\n \n \n \n \n \n conservation,\n \n \n \n \n \n genes,\n \n \n \n \n \n characteristics,\n \n \n \n \n \n inherit,\n \n \n \n \n \n resources,\n \n \n \n \n \n variation,\n \n \n \n \n \n cooling,\n \n \n \n \n \n changes,\n \n \n \n \n \n magnets,\n \n \n \n \n \n ph,\n \n \n \n \n \n neutral,\n \n \n \n \n \n neutralize,\n \n \n \n \n \n heat conduction,\n \n \n \n \n \n appliance,\n \n \n \n \n \n path of light,\n \n \n \n \n \n transparent,\n \n \n \n \n \n lightning,\n \n \n \n \n \n animals,\n \n \n \n \n \n signals,\n \n \n \n \n \n space,\n \n \n \n \n \n cellulose,\n \n \n \n \n \n plant,\n \n \n \n \n \n organism,\n \n \n \n \n \n gas,\n \n \n \n \n \n hydrogen,\n \n \n \n \n \n formula,\n \n \n \n \n \n chemical reaction,\n \n \n \n \n \n chemical,\n \n \n \n \n \n rusting,\n \n \n \n \n \n reduction,\n \n \n \n \n \n nature of chemical reactions,\n \n \n \n \n \n importance of chemical reactions,\n \n \n \n \n \n types of chemical reaction,\n \n \n \n \n \n useful chemical reactions,\n \n \n \n \n \n chemical change,\n \n \n \n \n \n reactants,\n \n \n \n \n \n oxidation,\n \n \n \n \n \n decomposition,\n \n \n \n \n \n fermentation,\n \n \n \n \n \n hazardous,\n \n \n \n \n \n food spoilage,\n \n \n \n \n \n prevention,\n \n \n \n \n \n soluble,\n \n \n \n \n \n rock,\n \n \n \n \n \n limestone,\n \n \n \n \n \n react,\n \n \n \n \n \n circuits,\n \n \n \n \n \n electric,\n \n \n \n \n \n battery,\n \n \n \n \n \n generator,\n \n \n \n \n \n atmosphere,\n \n \n \n \n \n population,\n \n \n \n \n \n evaporation,\n \n \n \n \n \n molecules,\n \n \n \n \n \n sunlight,\n \n \n \n \n \n clean energy,\n \n \n \n \n \n energy resources,\n \n \n \n \n \n hydroelectric energy,\n \n \n \n \n \n wave energy,\n \n \n \n \n \n non-renewable energy,\n \n \n \n \n \n energy conversion,\n \n \n \n \n \n global warming,\n \n \n \n \n \n carbon monoxide,\n \n \n \n \n \n cancer,\n \n \n \n \n \n materials,\n \n \n \n \n \n transfer of energy,\n \n \n \n \n \n magnetism,\n \n \n \n \n \n electromagnets,\n \n \n \n \n \n solution,\n \n \n \n \n \n emissions,\n \n \n \n \n \n power station,\n \n \n \n \n \n base,\n \n \n \n \n \n electric bell,\n \n \n \n \n \n vibration,\n \n \n \n \n \n hearing,\n \n \n \n \n \n loudness,\n \n \n \n \n \n loud,\n \n \n \n \n \n newtons,\n \n \n \n \n \n reactivity,\n \n \n \n \n \n salt,\n \n \n \n \n \n competition,\n \n \n \n \n \n predator,\n \n \n \n \n \n relationships,\n \n \n \n \n \n habitat,\n \n \n \n \n \n aerobic respiration,\n \n \n \n \n \n egg cell,\n \n \n \n \n \n energy loss,\n \n \n \n \n \n refraction,\n \n \n \n \n \n travel,\n \n \n \n \n \n medium,\n \n \n \n \n \n parallel,\n \n \n \n \n \n series,\n \n \n \n \n \n short circuit,\n \n \n \n \n \n bulbs,\n \n \n \n \n \n series circuit,\n \n \n \n \n \n angle,\n \n \n \n \n \n diagrams,\n \n \n \n \n \n force diagram,\n \n \n \n \n \n units,\n \n \n \n \n \n bile,\n \n \n \n \n \n measuring,\n \n \n \n \n \n pivot,\n \n \n \n \n \n seesaw,\n \n \n \n \n \n lever,\n \n \n \n \n \n attraction,\n \n \n \n \n \n boiling point,\n \n \n \n \n \n melting point,\n \n \n \n \n \n states of matter,\n \n \n \n \n \n three states of matter,\n \n \n \n \n \n changing states,\n \n \n \n \n \n states of water,\n \n \n \n \n \n compressed,\n \n \n \n \n \n compressibility,\n \n \n \n \n \n hydraulic arm,\n \n \n \n \n \n cell membrane,\n \n \n \n \n \n red blood cell,\n \n \n \n \n \n nerve cell,\n \n \n \n \n \n specialized cells,\n \n \n \n \n \n blood,\n \n \n \n \n \n toxic,\n \n \n \n \n \n organ,\n \n \n \n \n \n systems,\n \n \n \n \n \n human organ systems,\n \n \n \n \n \n femur,\n \n \n \n \n \n sternum,\n \n \n \n \n \n gametes,\n \n \n \n \n \n heart,\n \n \n \n \n \n respiratory system,\n \n \n \n \n \n digestive system,\n \n \n \n \n \n circulatory system,\n \n \n \n \n \n circulation,\n \n \n \n \n \n excretory system,\n \n \n \n \n \n sense organs,\n \n \n \n \n \n sensory,\n \n \n \n \n \n nerves,\n \n \n \n \n \n endocrine system,\n \n \n \n \n \n muscle system,\n \n \n \n \n \n uscles,\n \n \n \n \n \n skeletal system,\n \n \n \n \n \n inhalation,\n \n \n \n \n \n exhalation,\n \n \n \n \n \n diaphragm,\n \n \n \n \n \n kidney,\n \n \n \n \n \n urine,\n \n \n \n \n \n spinal cord,\n \n \n \n \n \n peripheral nerves,\n \n \n \n \n \n response,\n \n \n \n \n \n ovaries,\n \n \n \n \n \n eggs,\n \n \n \n \n \n glands,\n \n \n \n \n \n tissues,\n \n \n \n \n \n thyroid,\n \n \n \n \n \n triceps,\n \n \n \n \n \n biceps,\n \n \n \n \n \n impulses,\n \n \n \n \n \n quadriceps,\n \n \n \n \n \n pectorals,\n \n \n \n \n \n pelvis,\n \n \n \n \n \n carpals,\n \n \n \n \n \n primary consumer,\n \n \n \n \n \n feeding relationships,\n \n \n \n \n \n secondary consumer,\n \n \n \n \n \n life,\n \n \n \n \n \n processes,\n \n \n \n \n \n respiration reproduction,\n \n \n \n \n \n sensitivity,\n \n \n \n \n \n living,\n \n \n \n \n \n nonliving,\n \n \n \n \n \n non-living,\n \n \n \n \n \n life cycle,\n \n \n \n \n \n growth stages,\n \n \n \n \n \n shoots,\n \n \n \n \n \n asexual reproduction,\n \n \n \n \n \n clones,\n \n \n \n \n \n emulsify,\n \n \n \n \n \n saliva,\n \n \n \n \n \n gullet,\n \n \n \n \n \n liver,\n \n \n \n \n \n malnutrition,\n \n \n \n \n \n body mass,\n \n \n \n \n \n insoluble particles,\n \n \n \n \n \n soluble particles,\n \n \n \n \n \n teeth,\n \n \n \n \n \n gastric juices,\n \n \n \n \n \n pepsin,\n \n \n \n \n \n emulsifies,\n \n \n \n \n \n fat,\n \n \n \n \n \n gut,\n \n \n \n \n \n lipase,\n \n \n \n \n \n carbohydrase,\n \n \n \n \n \n protease,\n \n \n \n \n \n duodenum,\n \n \n \n \n \n solid waste,\n \n \n \n \n \n feces,\n \n \n \n \n \n poles,\n \n \n \n \n \n drugs,\n \n \n \n \n \n drugs and health,\n \n \n \n \n \n solvent products,\n \n \n \n \n \n alcohol,\n \n \n \n \n \n depressants,\n \n \n \n \n \n stimulants,\n \n \n \n \n \n hallucinogens,\n \n \n \n \n \n misuse of drugs,\n \n \n \n \n \n healthy,\n \n \n \n \n \n prescription drugs,\n \n \n \n \n \n prescription,\n \n \n \n \n \n hard drugs,\n \n \n \n \n \n soft drugs,\n \n \n \n \n \n reaction times,\n \n \n \n \n \n long-term effects,\n \n \n \n \n \n tranquilizers,\n \n \n \n \n \n heroin,\n \n \n \n \n \n cocaine,\n \n \n \n \n \n sensations,\n \n \n \n \n \n marijuana,\n \n \n \n \n \n cannabis,\n \n \n \n \n \n ecstasy,\n \n \n \n \n \n solvent abuse,\n \n \n \n \n \n roughage,\n \n \n \n \n \n repair,\n \n \n \n \n \n nutrients,\n \n \n \n \n \n balanced diet,\n \n \n \n \n \n fats,\n \n \n \n \n \n vitamins,\n \n \n \n \n \n fiber,\n \n \n \n \n \n maintenance,\n \n \n \n \n \n sucrose,\n \n \n \n \n \n scurvy,\n \n \n \n \n \n fractions,\n \n \n \n \n \n pure substances,\n \n \n \n \n \n seawater,\n \n \n \n \n \n metal alloys,\n \n \n \n \n \n bathyscaphe,\n \n \n \n \n \n fractionating,\n \n \n \n \n \n jet,\n \n \n \n \n \n engine,\n \n \n \n \n \n impurities,\n \n \n \n \n \n impurity,\n \n \n \n \n \n heat conductor,\n \n \n \n \n \n hydrogen gas,\n \n \n \n \n \n organs,\n \n \n \n \n \n cartilage,\n \n \n \n \n \n ligaments,\n \n \n \n \n \n the skeleton and movement,\n \n \n \n \n \n antagonistis,\n \n \n \n \n \n protection,\n \n \n \n \n \n support,\n \n \n \n \n \n joints,\n \n \n \n \n \n muscle pairs,\n \n \n \n \n \n bone hardening,\n \n \n \n \n \n spine,\n \n \n \n \n \n vital,\n \n \n \n \n \n framework,\n \n \n \n \n \n moveable,\n \n \n \n \n \n non-movable,\n \n \n \n \n \n gliding,\n \n \n \n \n \n hinge,\n \n \n \n \n \n ball-and-socket,\n \n \n \n \n \n ball and socket,\n \n \n \n \n \n conductor,\n \n \n \n \n \n reactivity of metals,\n \n \n \n \n \n boiling\xc2\xa0point,\n \n \n \n \n \n melting\xc2\xa0point,\n \n \n \n \n \n properties\xc2\xa0of\xc2\xa0metals,\n \n \n \n \n \n malleable,\n \n \n \n \n \n sonorous,\n \n \n \n \n \n state\xc2\xa0at\xc2\xa0room\xc2\xa0temperature,\n \n \n \n \n \n magnetic\xc2\xa0properties,\n \n \n \n \n \n thermal\xc2\xa0conductivity,\n \n \n \n \n \n electrical\xc2\xa0conductivity,\n \n \n \n \n \n uses\xc2\xa0of\xc2\xa0metals,\n \n \n \n \n \n magnetic\xc2\xa0metals,\n \n \n \n \n \n non-magnetic\xc2\xa0metals,\n \n \n \n \n \n conductors\xc2\xa0of\xc2\xa0heat,\n \n \n \n \n \n heat\xc2\xa0conductors,\n \n \n \n \n \n heat\xc2\xa0conduction,\n \n \n \n \n \n conductors\xc2\xa0of\xc2\xa0electricity,\n \n \n \n \n \n electicity\xc2\xa0conduction,\n \n \n \n \n \n malleability,\n \n \n \n \n \n cilia,\n \n \n \n \n \n dendrite,\n \n \n \n \n \n hair,\n \n \n \n \n \n specialization,\n \n \n \n \n \n capillaries,\n \n \n \n \n \n hemoglobin,\n \n \n \n \n \n chromosome,\n \n \n \n \n \n fertilize,\n \n \n \n \n \n axon,\n \n \n \n \n \n specialized.,\n \n \n \n \n \n constant,\n \n \n \n \n \n cyclist,\n \n \n \n \n \n frictional forces,\n \n \n \n \n \n force of friction,\n \n \n \n \n \n cycling,\n \n \n \n \n \n balancing friction,\n \n \n \n \n \n balancing frictional forces,\n \n \n \n \n \n air resistance,\n \n \n \n \n \n using friction,\n \n \n \n \n \n reducing friction,\n \n \n \n \n \n thrust,\n \n \n \n \n \n lift,\n \n \n \n \n \n drag,\n \n \n \n \n \n constant speed,\n \n \n \n \n \n parachute,\n \n \n \n \n \n vehicle,\n \n \n \n \n \n car,\n \n \n \n \n \n braking,\n \n \n \n \n \n grip,\n \n \n \n \n \n sports,\n \n \n \n \n \n aircraft,\n \n \n \n \n \n conserve,\n \n \n \n \n \n forest habitats,\n \n \n \n \n \n cave,\n \n \n \n \n \n ant,\n \n \n \n \n \n ocean habitats,\n \n \n \n \n \n hot habitats,\n \n \n \n \n \n dry habitats,\n \n \n \n \n \n soil habitats,\n \n \n \n \n \n forest,\n \n \n \n \n \n parasites,\n \n \n \n \n \n tropical,\n \n \n \n \n \n rainforest,\n \n \n \n \n \n mountain top,\n \n \n \n \n \n mountaintop,\n \n \n \n \n \n polar region,\n \n \n \n \n \n antarctica,\n \n \n \n \n \n arctic,\n \n \n \n \n \n seaweed,\n \n \n \n \n \n coral,\n \n \n \n \n \n desert,\n \n \n \n \n \n cacti,\n \n \n \n \n \n trees,\n \n \n \n \n \n succulents,\n \n \n \n \n \n meerkat,\n \n \n \n \n \n ermine,\n \n \n \n \n \n woodland plants,\n \n \n \n \n \n slug,\n \n \n \n \n \n mole,\n \n \n \n \n \n beetle,\n \n \n \n \n \n earthworm,\n \n \n \n \n \n mite,\n \n \n \n \n \n springtail,\n \n \n \n \n \n nematode,\n \n \n \n \n \n anther,\n \n \n \n \n \n pollination,\n \n \n \n \n \n flowering,\n \n \n \n \n \n plant nutrition,\n \n \n \n \n \n flowering plant reproduction,\n \n \n \n \n \n plant reproduction,\n \n \n \n \n \n fruit,\n \n \n \n \n \n plant organs,\n \n \n \n \n \n plant fertilization,\n \n \n \n \n \n seed dispersal,\n \n \n \n \n \n plant pore,\n \n \n \n \n \n plant sensitivity,\n \n \n \n \n \n plant excretion,\n \n \n \n \n \n plant movement,\n \n \n \n \n \n water transport,\n \n \n \n \n \n plant absorption,\n \n \n \n \n \n petal,\n \n \n \n \n \n stigma,\n \n \n \n \n \n filament,\n \n \n \n \n \n ovules,\n \n \n \n \n \n sepal,\n \n \n \n \n \n pollen grains,\n \n \n \n \n \n stamen,\n \n \n \n \n \n carpel,\n \n \n \n \n \n structure of flowering plants,\n \n \n \n \n \n Properties of non-metals,\n \n \n \n \n \n state at room temperature,\n \n \n \n \n \n thermal conductivity,\n \n \n \n \n \n electrical conductivity,\n \n \n \n \n \n nonmetals,\n \n \n \n \n \n appearance of non-metals,\n \n \n \n \n \n state,\n \n \n \n \n \n strength,\n \n \n \n \n \n conductivity,\n \n \n \n \n \n durable,\n \n \n \n \n \n egg,\n \n \n \n \n \n vulva,\n \n \n \n \n \n human reproduction,\n \n \n \n \n \n reproduce,\n \n \n \n \n \n male female,\n \n \n \n \n \n menstrual cycle,\n \n \n \n \n \n penis,\n \n \n \n \n \n scrotum,\n \n \n \n \n \n sperm cells,\n \n \n \n \n \n egg cells,\n \n \n \n \n \n fallopian tubes,\n \n \n \n \n \n vagina,\n \n \n \n \n \n uterus lining,\n \n \n \n \n \n uterine lining,\n \n \n \n \n \n menstrual,\n \n \n \n \n \n fertillization,\n \n \n \n \n \n sexual intercourse,\n \n \n \n \n \n intercourse,\n \n \n \n \n \n wire,\n \n \n \n \n \n coil,\n \n \n \n \n \n electromagnet,\n \n \n \n \n \n solenoid,\n \n \n \n \n \n currrent,\n \n \n \n \n \n magnetic field,\n \n \n \n \n \n wire coil,\n \n \n \n \n \n relay switch,\n \n \n \n \n \n magnetic forces,\n \n \n \n \n \n relay,\n \n \n \n \n \n switch,\n \n \n \n \n \n human eye,\n \n \n \n \n \n sensor,\n \n \n \n \n \n pupil,\n \n \n \n \n \n electrical signal,\n \n \n \n \n \n seeing,\n \n \n \n \n \n luminous object,\n \n \n \n \n \n eye,\n \n \n \n \n \n non-luminous object,\n \n \n \n \n \n optic nerve,\n \n \n \n \n \n sources of light,\n \n \n \n \n \n travels,\n \n \n \n \n \n shadows,\n \n \n \n \n \n eclipses,\n \n \n \n \n \n luminous,\n \n \n \n \n \n light travels,\n \n \n \n \n \n overhead projector,\n \n \n \n \n \n opaque,\n \n \n \n \n \n lunar,\n \n \n \n \n \n umbra,\n \n \n \n \n \n partial eclipse,\n \n \n \n \n \n time delay,\n \n \n \n \n \n thunder,\n \n \n \n \n \n system,\n \n \n \n \n \n size,\n \n \n \n \n \n Absorb,\n \n \n \n \n \n The solar system,\n \n \n \n \n \n galaxy,\n \n \n \n \n \n Milky Way,\n \n \n \n \n \n vacuum,\n \n \n \n \n \n star,\n \n \n \n \n \n night sky,\n \n \n \n \n \n universe,\n \n \n \n \n \n cluster,\n \n \n \n \n \n cosmic bodies,\n \n \n \n \n \n belt of asteroids,\n \n \n \n \n \n asteroids,\n \n \n \n \n \n comet,\n \n \n \n \n \n belt,\n \n \n \n \n \n dwarf giant,\n \n \n \n \n \n meteor,\n \n \n \n \n \n inner planets,\n \n \n \n \n \n outer planets,\n \n \n \n \n \n gravitational force,\n \n \n \n \n \n force of attraction,\n \n \n \n \n \n path,\n \n \n \n \n \n galaxies,\n \n \n \n \n \n light years,\n \n \n \n \n \n distances in space,\n \n \n \n \n \n light-year,\n \n \n \n \n \n disc-shaped,\n \n \n \n \n \n immensity,\n \n \n \n \n \n bronchioles,\n \n \n \n \n \n role,\n \n \n \n \n \n alveoli,\n \n \n \n \n \n mechanism,\n \n \n \n \n \n gas exchange,\n \n \n \n \n \n inhaled air,\n \n \n \n \n \n exhaled air,\n \n \n \n \n \n air sac,\n \n \n \n \n \n alveolus,\n \n \n \n \n \n breathe,\n \n \n \n \n \n formulas,\n \n \n \n \n \n number,\n \n \n \n \n \n rules,\n \n \n \n \n \n molecule,\n \n \n \n \n \n names,\n \n \n \n \n \n nitroglycerine,\n \n \n \n \n \n word equations,\n \n \n \n \n \n word equations for reactions,\n \n \n \n \n \n naming compounds,\n \n \n \n \n \n prefixes,\n \n \n \n \n \n copper sulfate,\n \n \n \n \n \n naming,\n \n \n \n \n \n elodea,\n \n \n \n \n \n starch,\n \n \n \n \n \n green plants,\n \n \n \n \n \n aquatic plants,\n \n \n \n \n \n requirements,\n \n \n \n \n \n protein,\n \n \n \n \n \n production,\n \n \n \n \n \n biodiversity,\n \n \n \n \n \n exoskeleton,\n \n \n \n \n \n spores,\n \n \n \n \n \n classification,\n \n \n \n \n \n taxonomy,\n \n \n \n \n \n fungi,\n \n \n \n \n \n prokaryotes,\n \n \n \n \n \n protista,\n \n \n \n \n \n protists,\n \n \n \n \n \n flowering plant,\n \n \n \n \n \n fern,\n \n \n \n \n \n conifer,\n \n \n \n \n \n molluscs,\n \n \n \n \n \n mammal,\n \n \n \n \n \n reptile,\n \n \n \n \n \n bird,\n \n \n \n \n \n amphibian,\n \n \n \n \n \n invertebrates,\n \n \n \n \n \n vertebrates,\n \n \n \n \n \n arthropods,\n \n \n \n \n \n flatworms,\n \n \n \n \n \n annelids,\n \n \n \n \n \n echinoderms,\n \n \n \n \n \n coelenterates,\n \n \n \n \n \n organisms,\n \n \n \n \n \n groups of organisms,\n \n \n \n \n \n taxonomic groups,\n \n \n \n \n \n animal classification,\n \n \n \n \n \n plant classification,\n \n \n \n \n \n kingdoms,\n \n \n \n \n \n phylum,\n \n \n \n \n \n vascular system,\n \n \n \n \n \n vascular,\n \n \n \n \n \n molds,\n \n \n \n \n \n moss,\n \n \n \n \n \n alga,\n \n \n \n \n \n symbols,\n \n \n \n \n \n cellenergy,\n \n \n \n \n \n electrical circuits,\n \n \n \n \n \n voltage,\n \n \n \n \n \n voltmeter,\n \n \n \n \n \n static electricity,\n \n \n \n \n \n electrical components,\n \n \n \n \n \n drawing circuits,\n \n \n \n \n \n electrons,\n \n \n \n \n \n charge,\n \n \n \n \n \n negative charge,\n \n \n \n \n \n positive charge,\n \n \n \n \n \n van de graaff generator,\n \n \n \n \n \n electrical symbols,\n \n \n \n \n \n circuit boards,\n \n \n \n \n \n insulate,\n \n \n \n \n \n resist,\n \n \n \n \n \n natural,\n \n \n \n \n \n observation,\n \n \n \n \n \n telephone,\n \n \n \n \n \n satellites,\n \n \n \n \n \n hubble space telescope,\n \n \n \n \n \n hubble,\n \n \n \n \n \n space observatory,\n \n \n \n \n \n telescope,\n \n \n \n \n \n images,\n \n \n \n \n \n moons,\n \n \n \n \n \n artificial satellites,\n \n \n \n \n \n probes,\n \n \n \n \n \n weather monitoring,\n \n \n \n \n \n communication,\n \n \n \n \n \n navigation,\n \n \n \n \n \n outer space,\n \n \n \n \n \n exploration,\n \n \n \n \n \n gravitational,\n \n \n \n \n \n geostationary,\n \n \n \n \n \n radio,\n \n \n \n \n \n tv,\n \n \n \n \n \n navigate,\n \n \n \n \n \n internet,\n \n \n \n \n \n antenna,\n \n \n \n \n \n survey,\n \n \n \n \n \n maps,\n \n \n \n \n \n studies,\n \n \n \n \n \n military,\n \n \n \n \n \n photographs,\n \n \n \n \n \n variable,\n \n \n \n \n \n predation,\n \n \n \n \n \n interaction,\n \n \n \n \n \n predator\xe2\x80\x93prey\xc2\xa0relationships,\n \n \n \n \n \n population\xc2\xa0size,\n \n \n \n \n \n human\xc2\xa0competition,\n \n \n \n \n \n community,\n \n \n \n \n \n food\xc2\xa0sources,\n \n \n \n \n \n solvent,\n \n \n \n \n \n pigment,\n \n \n \n \n \n separating,\n \n \n \n \n \n separating mixtures,\n \n \n \n \n \n distillation,\n \n \n \n \n \n fractional distillation,\n \n \n \n \n \n ink,\n \n \n \n \n \n separate,\n \n \n \n \n \n filtration,\n \n \n \n \n \n chromatography,\n \n \n \n \n \n constituent,\n \n \n \n \n \n ions,\n \n \n \n \n \n rectum,\n \n \n \n \n \n urea,\n \n \n \n \n \n absorption\xc2\xa0and\xc2\xa0waste,\n \n \n \n \n \n small\xc2\xa0intestine,\n \n \n \n \n \n food\xc2\xa0absorption,\n \n \n \n \n \n kidneys,\n \n \n \n \n \n defecation,\n \n \n \n \n \n regulating,\n \n \n \n \n \n dialysis,\n \n \n \n \n \n elimination,\n \n \n \n \n \n high-fiber\xc2\xa0foods,\n \n \n \n \n \n villi,\n \n \n \n \n \n placenta,\n \n \n \n \n \n zygote,\n \n \n \n \n \n implantation,\n \n \n \n \n \n fetal,\n \n \n \n \n \n birth,\n \n \n \n \n \n baby,\n \n \n \n \n \n fallopian tube,\n \n \n \n \n \n fallopian,\n \n \n \n \n \n development of the fetus,\n \n \n \n \n \n hot,\n \n \n \n \n \n adolescence,\n \n \n \n \n \n skin,\n \n \n \n \n \n sweat,\n \n \n \n \n \n males,\n \n \n \n \n \n females,\n \n \n \n \n \n adolescent,\n \n \n \n \n \n emotional changes,\n \n \n \n \n \n emotion,\n \n \n \n \n \n reproductive organs,\n \n \n \n \n \n childhood,\n \n \n \n \n \n adulthood,\n \n \n \n \n \n growth rates,\n \n \n \n \n \n acne,\n \n \n \n \n \n facial discolorations,\n \n \n \n \n \n sebum,\n \n \n \n \n \n premenstrual behavior,\n \n \n \n \n \n chromosomes,\n \n \n \n \n \n inheritance,\n \n \n \n \n \n genetic modification,\n \n \n \n \n \n fingerprints,\n \n \n \n \n \n inherited characteristics,\n \n \n \n \n \n selective breeding,\n \n \n \n \n \n breeding,\n \n \n \n \n \n cross breeding,\n \n \n \n \n \n modify,\n \n \n \n \n \n offspring,\n \n \n \n \n \n DNA molecules,\n \n \n \n \n \n DNA,\n \n \n \n \n \n generation,\n \n \n \n \n \n breed,\n \n \n \n \n \n descendent,\n \n \n \n \n \n desired characteristics,\n \n \n \n \n \n comparison,\n \n \n \n \n \n wind turbine,\n \n \n \n \n \n solar panel,\n \n \n \n \n \n windmill,\n \n \n \n \n \n solar-powered house,\n \n \n \n \n \n gas-fired power station,\n \n \n \n \n \n power plant,\n \n \n \n \n \n energy production,\n \n \n \n \n \n house,\n \n \n \n \n \n thermal energy,\n \n \n \n \n \n forms of energy,\n \n \n \n \n \n circulation of energy,\n \n \n \n \n \n fuel shortages,\n \n \n \n \n \n tidal energy,\n \n \n \n \n \n tide,\n \n \n \n \n \n erosion,\n \n \n \n \n \n volcano,\n \n \n \n \n \n weathering,\n \n \n \n \n \n rock formation,\n \n \n \n \n \n rocks,\n \n \n \n \n \n marble,\n \n \n \n \n \n building materials,\n \n \n \n \n \n sedimentary rocks,\n \n \n \n \n \n sedimentary,\n \n \n \n \n \n sediment,\n \n \n \n \n \n igneous rocks,\n \n \n \n \n \n igneous,\n \n \n \n \n \n metamorphic rocks,\n \n \n \n \n \n metamorphize,\n \n \n \n \n \n rock cycle,\n \n \n \n \n \n cycle,\n \n \n \n \n \n uses of rocks,\n \n \n \n \n \n metamorphic,\n \n \n \n \n \n composition of rocks,\n \n \n \n \n \n rock composition,\n \n \n \n \n \n composition,\n \n \n \n \n \n examples of rocks,\n \n \n \n \n \n identifying minerals,\n \n \n \n \n \n cemented,\n \n \n \n \n \n molten,\n \n \n \n \n \n magma,\n \n \n \n \n \n erode,\n \n \n \n \n \n deposition,\n \n \n \n \n \n deposit,\n \n \n \n \n \n nutrient deficiency,\n \n \n \n \n \n nitrogen,\n \n \n \n \n \n potassium,\n \n \n \n \n \n nitrates,\n \n \n \n \n \n root systems,\n \n \n \n \n \n root hair cells,\n \n \n \n \n \n phosphates,\n \n \n \n \n \n fertilizers,\n \n \n \n \n \n pale plants,\n \n \n \n \n \n NPK,\n \n \n \n \n \n artificial fertilizers,\n \n \n \n \n \n natural fertilizers,\n \n \n \n \n \n energy flow,\n \n \n \n \n \n mixture,\n \n \n \n \n \n solutions,\n \n \n \n \n \n solute,\n \n \n \n \n \n solubility,\n \n \n \n \n \n dissolving,\n \n \n \n \n \n saturated solutions,\n \n \n \n \n \n saturated,\n \n \n \n \n \n saturate,\n \n \n \n \n \n types of solvents,\n \n \n \n \n \n salt solution,\n \n \n \n \n \n periodic table,\n \n \n \n \n \n noble gases,\n \n \n \n \n \n reactive metals,\n \n \n \n \n \n non-elements,\n \n \n \n \n \n chemical names,\n \n \n \n \n \n chemical symbols,\n \n \n \n \n \n conductors,\n \n \n \n \n \n disease,\n \n \n \n \n \n infectious disease,\n \n \n \n \n \n fighting,\n \n \n \n \n \n fighting disease,\n \n \n \n \n \n immunity,\n \n \n \n \n \n artificial immunity,\n \n \n \n \n \n antibodies,\n \n \n \n \n \n viruses,\n \n \n \n \n \n human defense system,\n \n \n \n \n \n microorganisms,\n \n \n \n \n \n bacterial disease infection,\n \n \n \n \n \n viral,\n \n \n \n \n \n fungus,\n \n \n \n \n \n antibiotics,\n \n \n \n \n \n non-infectious diseases,\n \n \n \n \n \n variation between species,\n \n \n \n \n \n variation among species,\n \n \n \n \n \n human variation,\n \n \n \n \n \n continuous variation.,\n \n \n \n \n \n acids,\n \n \n \n \n \n acidic foods,\n \n \n \n \n \n bases,\n \n \n \n \n \n alkaline,\n \n \n \n \n \n classifying substances,\n \n \n \n \n \n classiy,\n \n \n \n \n \n indicators,\n \n \n \n \n \n ph scale,\n \n \n \n \n \n uses of acids,\n \n \n \n \n \n uses of bases,\n \n \n \n \n \n neutralizing,\n \n \n \n \n \n corrosive,\n \n \n \n \n \n examples of acids,\n \n \n \n \n \n examples of bases,\n \n \n \n \n \n dyes,\n \n \n \n \n \n acids and bases,\n \n \n \n \n \n atom,\n \n \n \n \n \n copper sulfide,\n \n \n \n \n \n examples of chemical reactions,\n \n \n \n \n \n combustion of hydrogen,\n \n \n \n \n \n making water,\n \n \n \n \n \n subtraction,\n \n \n \n \n \n prism,\n \n \n \n \n \n object,\n \n \n \n \n \n white light,\n \n \n \n \n \n dispersion,\n \n \n \n \n \n dispersion of light,\n \n \n \n \n \n color addition,\n \n \n \n \n \n colored filters,\n \n \n \n \n \n colored objects,\n \n \n \n \n \n color subtraction,\n \n \n \n \n \n white,\n \n \n \n \n \n spectrum,\n \n \n \n \n \n wavelength,\n \n \n \n \n \n splitting,\n \n \n \n \n \n primary colors,\n \n \n \n \n \n secondary colors,\n \n \n \n \n \n absorbed,\n \n \n \n \n \n reflect,\n \n \n \n \n \n color of objects,\n \n \n \n \n \n flags,\n \n \n \n \n \n joules,\n \n \n \n \n \n nocturnal,\n \n \n \n \n \n diurnal,\n \n \n \n \n \n seasonal changes,\n \n \n \n \n \n hibernation,\n \n \n \n \n \n migration,\n \n \n \n \n \n animal adaptations,\n \n \n \n \n \n plant adaptations,\n \n \n \n \n \n daily changes,\n \n \n \n \n \n camouflage,\n \n \n \n \n \n emission,\n \n \n \n \n \n sustainable,\n \n \n \n \n \n sustainable development,\n \n \n \n \n \n low-energy house,\n \n \n \n \n \n environmental protection,\n \n \n \n \n \n endangered species,\n \n \n \n \n \n Amazon,\n \n \n \n \n \n low-energy living,\n \n \n \n \n \n low energy,\n \n \n \n \n \n protect,\n \n \n \n \n \n solar power,\n \n \n \n \n \n wind power,\n \n \n \n \n \n habitat loss,\n \n \n \n \n \n extinct,\n \n \n \n \n \n threatened,\n \n \n \n \n \n soil erosion,\n \n \n \n \n \n tourism,\n \n \n \n \n \n renewable resources,\n \n \n \n \n \n nonrenewable resources,\n \n \n \n \n \n carbon emissions,\n \n \n \n \n \n Transfer of energy,\n \n \n \n \n \n natural gas,\n \n \n \n \n \n energy sources,\n \n \n \n \n \n wood,\n \n \n \n \n \n movement of air,\n \n \n \n \n \n movement of water,\n \n \n \n \n \n water movement,\n \n \n \n \n \n air movement,\n \n \n \n \n \n sun's,\n \n \n \n \n \n causes,\n \n \n \n \n \n Causes of variation,\n \n \n \n \n \n moisture,\n \n \n \n \n \n inherited variation,\n \n \n \n \n \n environmental variation,\n \n \n \n \n \n environment human characteristics,\n \n \n \n \n \n variation in plants,\n \n \n \n \n \n plant variation,\n \n \n \n \n \n combining genes,\n \n \n \n \n \n environmental factors,\n \n \n \n \n \n blood type,\n \n \n \n \n \n inherited diseases,\n \n \n \n \n \n dieseases,\n \n \n \n \n \n eye color,\n \n \n \n \n \n skin color attached earlobes,\n \n \n \n \n \n earlobes,\n \n \n \n \n \n language,\n \n \n \n \n \n problems,\n \n \n \n \n \n addictive,\n \n \n \n \n \n carcinogenic,\n \n \n \n \n \n smoking,\n \n \n \n \n \n chemicals,\n \n \n \n \n \n cigarette,\n \n \n \n \n \n smoke,\n \n \n \n \n \n tobacco,\n \n \n \n \n \n heart disease,\n \n \n \n \n \n nicotine,\n \n \n \n \n \n addiction,\n \n \n \n \n \n high blood pressure,\n \n \n \n \n \n heart attack,\n \n \n \n \n \n tar,\n \n \n \n \n \n carcinogen,\n \n \n \n \n \n unborn baby,\n \n \n \n \n \n pregnant,\n \n \n \n \n \n death,\n \n \n \n \n \n illness,\n \n \n \n \n \n rate,\n \n \n \n \n \n chloroplasts,\n \n \n \n \n \n affecting,\n \n \n \n \n \n factors affecting photosynthesis,\n \n \n \n \n \n palisade cells,\n \n \n \n \n \n greenhouse,\n \n \n \n \n \n contraction,\n \n \n \n \n \n wax,\n \n \n \n \n \n physical,\n \n \n \n \n \n physical changes,\n \n \n \n \n \n hard,\n \n \n \n \n \n physical changes in materials,\n \n \n \n \n \n expansion,\n \n \n \n \n \n thermal expansion,\n \n \n \n \n \n thermostats,\n \n \n \n \n \n appearance,\n \n \n \n \n \n cooling curves,\n \n \n \n \n \n expand,\n \n \n \n \n \n contract,\n \n \n \n \n \n hardness,\n \n \n \n \n \n states,\n \n \n \n \n \n heating curve,\n \n \n \n \n \n stings,\n \n \n \n \n \n neutralization,\n \n \n \n \n \n making salts,\n \n \n \n \n \n acid indigestion,\n \n \n \n \n \n acidic soils,\n \n \n \n \n \n neutralization reactions,\n \n \n \n \n \n types of salt,\n \n \n \n \n \n indigestion,\n \n \n \n \n \n heartburn,\n \n \n \n \n \n practical uses,\n \n \n \n \n \n ph of soil,\n \n \n \n \n \n liming soil,\n \n \n \n \n \n neutralization of acidic gases,\n \n \n \n \n \n power station emissions,\n \n \n \n \n \n ear protection,\n \n \n \n \n \n decibel,\n \n \n \n \n \n tinnitus,\n \n \n \n \n \n ear,\n \n \n \n \n \n hearing process,\n \n \n \n \n \n audible frequency,\n \n \n \n \n \n audible frequency ranges,\n \n \n \n \n \n frequency ranges,\n \n \n \n \n \n audible range of humans,\n \n \n \n \n \n audible,\n \n \n \n \n \n humans,\n \n \n \n \n \n loud sounds,\n \n \n \n \n \n outer ear,\n \n \n \n \n \n middle ear,\n \n \n \n \n \n inner ear,\n \n \n \n \n \n electrical signals,\n \n \n \n \n \n auditory nerve,\n \n \n \n \n \n auditory,\n \n \n \n \n \n hertz,\n \n \n \n \n \n measuring sound,\n \n \n \n \n \n audible frequency in animals,\n \n \n \n \n \n aging,\n \n \n \n \n \n hearing mechanisms,\n \n \n \n \n \n age,\n \n \n \n \n \n ear wax,\n \n \n \n \n \n ear damage,\n \n \n \n \n \n threshhold,\n \n \n \n \n \n noise,\n \n \n \n \n \n animal,\n \n \n \n \n \n animal and plant cells,\n \n \n \n \n \n organ and chloroplast,\n \n \n \n \n \n animal cell,\n \n \n \n \n \n plant cell,\n \n \n \n \n \n cell wall,\n \n \n \n \n \n tissue,\n \n \n \n \n \n levels of organization,\n \n \n \n \n \n cellular function,\n \n \n \n \n \n organ systems,\n \n \n \n \n \n cell components,\n \n \n \n \n \n white blood cell,\n \n \n \n \n \n area,\n \n \n \n \n \n building,\n \n \n \n \n \n ice,\n \n \n \n \n \n decreased pressure,\n \n \n \n \n \n decreasing pressure,\n \n \n \n \n \n foundations,\n \n \n \n \n \n foundation,\n \n \n \n \n \n broad feet,\n \n \n \n \n \n camels,\n \n \n \n \n \n surfing,\n \n \n \n \n \n snowboard,\n \n \n \n \n \n skis,\n \n \n \n \n \n boxing glove,\n \n \n \n \n \n boxing gloves,\n \n \n \n \n \n tractor,\n \n \n \n \n \n frozen lake,\n \n \n \n \n \n frozen river,\n \n \n \n \n \n pressure equation,\n \n \n \n \n \n calculating pressure,\n \n \n \n \n \n increasing pressure,\n \n \n \n \n \n pascals,\n \n \n \n \n \n pressure equation triangle,\n \n \n \n \n \n sodium,\n \n \n \n \n \n magnesium,\n \n \n \n \n \n oxides,\n \n \n \n \n \n tarnish,\n \n \n \n \n \n hindenburg,\n \n \n \n \n \n insoluble,\n \n \n \n \n \n preventing corrosion,\n \n \n \n \n \n acid reactions,\n \n \n \n \n \n chemical weathering,\n \n \n \n \n \n carbonate,\n \n \n \n \n \n metal oxide,\n \n \n \n \n \n metal hydroxide,\n \n \n \n \n \n rust,\n \n \n \n \n \n salts,\n \n \n \n \n \n displacement,\n \n \n \n \n \n displacement reactions,\n \n \n \n \n \n extraction of metals,\n \n \n \n \n \n extraction,\n \n \n \n \n \n ores,\n \n \n \n \n \n examples of displacement reactions,\n \n \n \n \n \n reactivity series,\n \n \n \n \n \n thermite reaction,\n \n \n \n \n \n thermite,\n \n \n \n \n \n reactive,\n \n \n \n \n \n stomata,\n \n \n \n \n \n respiration in plants,\n \n \n \n \n \n transformation,\n \n \n \n \n \n radiation,\n \n \n \n \n \n electromagnetic radiation,\n \n \n \n \n \n heat waves,\n \n \n \n \n \n boiling water,\n \n \n \n \n \n convection,\n \n \n \n \n \n heat convection,\n \n \n \n \n \n electical energy,\n \n \n \n \n \n gravitational energy,\n \n \n \n \n \n transferring,\n \n \n \n \n \n currents,\n \n \n \n \n \n frequency,\n \n \n \n \n \n ultrasound,\n \n \n \n \n \n pitch,\n \n \n \n \n \n amplitude,\n \n \n \n \n \n oscilloscope,\n \n \n \n \n \n ringing,\n \n \n \n \n \n vibrate,\n \n \n \n \n \n vibrating,\n \n \n \n \n \n hear,\n \n \n \n \n \n echoes,\n \n \n \n \n \n echolocation,\n \n \n \n \n \n quiet,\n \n \n \n \n \n generating,\n \n \n \n \n \n uranium,\n \n \n \n \n \n plutonium,\n \n \n \n \n \n fossil fuel,\n \n \n \n \n \n generating electricity,\n \n \n \n \n \n electricity generation,\n \n \n \n \n \n nuclear energy,\n \n \n \n \n \n steam,\n \n \n \n \n \n advantages,\n \n \n \n \n \n disadvantages,\n \n \n \n \n \n PV,\n \n \n \n \n \n photovoltaic cells,\n \n \n \n \n \n photovoltaic,\n \n \n \n \n \n electrical current,\n \n \n \n \n \n radioactive,\n \n \n \n \n \n fission,\n \n \n \n \n \n nuclear,\n \n \n \n \n \n circuit diagrams,\n \n \n \n \n \n electrical circuit,\n \n \n \n \n \n symbol,\n \n \n \n \n \n series and parallel circuits,\n \n \n \n \n \n power supply,\n \n \n \n \n \n effects,\n \n \n \n \n \n the effects of combustion,\n \n \n \n \n \n reducing pollution,\n \n \n \n \n \n catalytic converter,\n \n \n \n \n \n smog,\n \n \n \n \n \n effects of combustion,\n \n \n \n \n \n precipitation,\n \n \n \n \n \n rain,\n \n \n \n \n \n sulfur dioxide,\n \n \n \n \n \n oxides of nitrogen,\n \n \n \n \n \n pencil,\n \n \n \n \n \n bent,\n \n \n \n \n \n bent pencil,\n \n \n \n \n \n ray of light,\n \n \n \n \n \n light ray,\n \n \n \n \n \n incident ray,\n \n \n \n \n \n refracted ray,\n \n \n \n \n \n incident,\n \n \n \n \n \n incidence,\n \n \n \n \n \n angle of incidence,\n \n \n \n \n \n angle of refraction,\n \n \n \n \n \n emergent ray,\n \n \n \n \n \n normal,\n \n \n \n \n \n transparent materials,\n \n \n \n \n \n refraction of light,\n \n \n \n \n \n light refraction,\n \n \n \n \n \n speed of light,\n \n \n \n \n \n refraction examples,\n \n \n \n \n \n refraction diagrams,\n \n \n \n \n \n examples of refraction,\n \n \n \n \n \n direction,\n \n \n \n \n \n rays,\n \n \n \n \n \n bend,\n \n \n \n \n \n optical effects,\n \n \n \n \n \n incident light ray,\n \n \n \n \n \n ray,\n \n \n \n \n \n drawing,\n \n \n \n \n \n diffuse\xc2\xa0reflection,\n \n \n \n \n \n different\xc2\xa0surfaces,\n \n \n \n \n \n glossy\xc2\xa0surface,\n \n \n \n \n \n rough\xc2\xa0surface,\n \n \n \n \n \n reflected\xc2\xa0ray,\n \n \n \n \n \n smooth\xc2\xa0surface,\n \n \n \n \n \n irregular\xc2\xa0surface,\n \n \n \n \n \n angle\xc2\xa0of\xc2\xa0incidence,\n \n \n \n \n \n mirrors,\n \n \n \n \n \n periscopes,\n \n \n \n \n \n reflection\xc2\xa0diagrams,\n \n \n \n \n \n food chains,\n \n \n \n \n \n producers,\n \n \n \n \n \n consumers,\n \n \n \n \n \n food pyramids,\n \n \n \n \n \n herbivores,\n \n \n \n \n \n carnivores,\n \n \n \n \n \n omnivores,\n \n \n \n \n \n unbalanced,\n \n \n \n \n \n forces,\n \n \n \n \n \n balanced and unbalanced forces,\n \n \n \n \n \n push,\n \n \n \n \n \n upward force,\n \n \n \n \n \n unbalanced forces,\n \n \n \n \n \n pull,\n \n \n \n \n \n effect of forces,\n \n \n \n \n \n billiard ball,\n \n \n \n \n \n upward,\n \n \n \n \n \n downward force,\n \n \n \n \n \n downward,\n \n \n \n \n \n unbalance,\n \n \n \n \n \n space probe,\n \n \n \n \n \n accelerate,\n \n \n \n \n \n decelerate,\n \n \n \n \n \n acceleration,\n \n \n \n \n \n deceleration,\n \n \n \n \n \n stationary,\n \n \n \n \n \n changing,\n \n \n \n \n \n graph,\n \n \n \n \n \n converting,\n \n \n \n \n \n time,\n \n \n \n \n \n calculation,\n \n \n \n \n \n change,\n \n \n \n \n \n velocity,\n \n \n \n \n \n speed calculations,\n \n \n \n \n \n speed calculation,\n \n \n \n \n \n average speed,\n \n \n \n \n \n speed equation triangle,\n \n \n \n \n \n convert,\n \n \n \n \n \n graphical representation,\n \n \n \n \n \n units of speed,\n \n \n \n \n \n speed equation,\n \n \n \n \n \n speedometer,\n \n \n \n \n \n limewater,\n \n \n \n \n \n burning,\n \n \n \n \n \n anaerobic respiration,\n \n \n \n \n \n equation for aerobic respiration,\n \n \n \n \n \n equation for anaerobic respiration,\n \n \n \n \n \n energy from respiration,\n \n \n \n \n \n lactic acid,\n \n \n \n \n \n sugars,\n \n \n \n \n \n demand for energy,\n \n \n \n \n \n gravitational attraction,\n \n \n \n \n \n weightless,\n \n \n \n \n \n gravitation,\n \n \n \n \n \n falling,\n \n \n \n \n \n objects,\n \n \n \n \n \n mass and weight,\n \n \n \n \n \n force meter,\n \n \n \n \n \n light year,\n \n \n \n \n \n sun,\n \n \n \n \n \n northern sky,\n \n \n \n \n \n southern sky,\n \n \n \n \n \n andromeda,\n \n \n \n \n \n aries,\n \n \n \n \n \n perseus,\n \n \n \n \n \n cassiopeia,\n \n \n \n \n \n lacerta,\n \n \n \n \n \n cepheus,\n \n \n \n \n \n cygnus,\n \n \n \n \n \n lyra,\n \n \n \n \n \n draco,\n \n \n \n \n \n ursa minor,\n \n \n \n \n \n litlle bear,\n \n \n \n \n \n hercules,\n \n \n \n \n \n corona borealis,\n \n \n \n \n \n bo\xc3\xb6tes,\n \n \n \n \n \n ursa major,\n \n \n \n \n \n great bear,\n \n \n \n \n \n gemini,\n \n \n \n \n \n auriga,\n \n \n \n \n \n leo,\n \n \n \n \n \n coma berenices,\n \n \n \n \n \n eridanus,\n \n \n \n \n \n hydrus,\n \n \n \n \n \n dorado,\n \n \n \n \n \n columba,\n \n \n \n \n \n puppis,\n \n \n \n \n \n carina,\n \n \n \n \n \n vela,\n \n \n \n \n \n antlia,\n \n \n \n \n \n centaurus,\n \n \n \n \n \n hydra,\n \n \n \n \n \n lupus,\n \n \n \n \n \n scorpius,\n \n \n \n \n \n sagittarius,\n \n \n \n \n \n triangulum,\n \n \n \n \n \n corona australis,\n \n \n \n \n \n useful energy,\n \n \n \n \n \n wasted energy,\n \n \n \n \n \n energy conservation,\n \n \n \n \n \n conservation of energy,\n \n \n \n \n \n principle of conservation of energy,\n \n \n \n \n \n created,\n \n \n \n \n \n destroyed,\n \n \n \n \n \n elastic energy,\n \n \n \n \n \n input,\n \n \n \n \n \n output,\n \n \n \n \n \n form of energy,\n \n \n \n \n \n specialized organisms,\n \n \n \n \n \n force and rotation,\n \n \n \n \n \n wheelbarrow,\n \n \n \n \n \n crowbar,\n \n \n \n \n \n effort,\n \n \n \n \n \n load,\n \n \n \n \n \n turning force,\n \n \n \n \n \n effort force,\n \n \n \n \n \n load force,\n \n \n \n \n \n types of levers,\n \n \n \n \n \n simple machine,\n \n \n \n \n \n fulcrum,\n \n \n \n \n \n first-class lever,\n \n \n \n \n \n second-class lever,\n \n \n \n \n \n third-class lever,\n \n \n \n \n \n central load,\n \n \n \n \n \n central effort,\n \n \n \n \n \n central pivot,\n \n \n \n \n \n first class,\n \n \n \n \n \n second class,\n \n \n \n \n \n central,\n \n \n \n \n \n turning,\n \n \n \n \n \n low resistance,\n \n \n \n \n \n high resistance,\n \n \n \n \n \n ammeter,\n \n \n \n \n \n parallel circuit,\n \n \n \n \n \n components,\n \n \n \n \n \n testing current flow,\n \n \n \n \n \n measure,\n \n \n \n \n \n moment,\n \n \n \n \n \n clockwise,\n \n \n \n \n \n moment equation,\n \n \n \n \n \n torque,\n \n \n \n \n \n measuring torque,\n \n \n \n \n \n principle of torque,\n \n \n \n \n \n principle,\n \n \n \n \n \n balancing torque,\n \n \n \n \n \n balancing,\n \n \n \n \n \n calculating torque,\n \n \n \n \n \n turning effect,\n \n \n \n \n \n allen key,\n \n \n \n \n \n calculate,\n \n \n \n \n \n counterclockwise,\n \n \n \n \n \n equal forces,\n \n \n \n \n \n opposite forces,\n \n \n \n \n \n calculating distance,\n \n \n \n \n \n clockwise torque,\n \n \n \n \n \n compass,\n \n \n \n \n \n cobalt,\n \n \n \n \n \n nickel,\n \n \n \n \n \n repulsion,\n \n \n \n \n \n bar magnet,\n \n \n \n \n \n magnetic materials,\n \n \n \n \n \n magnetic fields,\n \n \n \n \n \n permanent,\n \n \n \n \n \n steel,\n \n \n \n \n \n magnetic compass,\n \n \n \n \n \n magnetic field lines,\n \n \n \n \n \n cell specialization,\n \n \n \n \n \n root hair cell,\n \n \n \n \n \n blood vessels,\n \n \n \n \n \n genetic information,\n \n \n \n \n \n female cell,\n \n \n \n \n \n corona radiata,\n \n \n \n \n \n zona pellucida,\n \n \n \n \n \n electrical impulse,\n \n \n \n \n \n perpendicular,\n \n \n \n \n \n axis,\n \n \n \n \n \n seasons,\n \n \n \n \n \n Northern Hemisphere,\n \n \n \n \n \n Southern Hemisphere,\n \n \n \n \n \n summer,\n \n \n \n \n \n winter,\n \n \n \n \n \n spring,\n \n \n \n \n \n Earth's tilt,\n \n \n \n \n \n angle of Earth tilt,\n \n \n \n \n \n South Pole,\n \n \n \n \n \n North Pole,\n \n \n \n \n \n Earth's surface temperature,\n \n \n \n \n \n Earth's rotation,\n \n \n \n \n \n angle of tilt,\n \n \n \n \n \n Earth's poles,\n \n \n \n \n \n day,\n \n \n \n \n \n Earth movement,\n \n \n \n \n \n movement of the Earth,\n \n \n \n \n \n Earth's movement,\n \n \n \n \n \n night,\n \n \n \n \n \n apparent movement,\n \n \n \n \n \n stars,\n \n \n \n \n \n Earth's orbit,\n \n \n \n \n \n sky,\n \n \n \n \n \n star trails,\n \n \n \n \n \n sound pitch,\n \n \n \n \n \n high-pitched sound,\n \n \n \n \n \n sound vibration,\n \n \n \n \n \n wave vibration,\n \n \n \n \n \n low-pitched sound,\n \n \n \n \n \n sound frequency,\n \n \n \n \n \n sound amplitude,\n \n \n \n \n \n wave amplitude,\n \n \n \n \n \n sound travel,\n \n \n \n \n \n sound waves,\n \n \n \n \n \n speed of sound,\n \n \n \n \n \n light travel,\n \n \n \n \n \n sound production,\n \n \n \n \n \n guitar strings,\n \n \n \n \n \n volume control,\n \n \n \n \n \n high frequency,\n \n \n \n \n \n low frequency,\n \n \n \n \n \n high-frequency sound,\n \n \n \n \n \n low-frequency sond,\n \n \n \n \n \n food chain,\n \n \n \n \n \n food webs,\n \n \n \n \n \n top predator,\n \n \n \n \n \n consumer,\n \n \n \n \n \n carnivore,\n \n \n \n \n \n producer,\n \n \n \n \n \n marine food web,\n \n \n \n \n \n omnivore,\n \n \n \n \n \n herbivore,\n \n \n \n \n \n the\xc2\xa0reactivity\xc2\xa0of\xc2\xa0metals,\n \n \n \n \n \n naming\xc2\xa0salts,\n \n \n \n \n \n reactivity\xc2\xa0of\xc2\xa0metals,\n \n \n \n \n \n oxygen\xc2\xa0reaction,\n \n \n \n \n \n water\xc2\xa0reaction,\n \n \n \n \n \n acid\xc2\xa0reaction,\n \n \n \n \n \n metal\xc2\xa0oxides,\n \n \n \n \n \n hydrogen\xc2\xa0gas,\n \n \n \n \n \n uses\xc2\xa0of\xc2\xa0salts,\n \n \n \n \n \n examples\xc2\xa0of\xc2\xa0salts,\n \n \n \n \n \n inverted pyramid,\n \n \n \n \n \n cell\xc2\xa0membrane,\n \n \n \n \n \n red\xc2\xa0blood\xc2\xa0cell,\n \n \n \n \n \n nervous\xc2\xa0system,\n \n \n \n \n \n nerve\xc2\xa0cell,\n \n \n \n \n \n life\xc2\xa0processes,\n \n \n \n \n \n sperm\xc2\xa0cell,\n \n \n \n \n \n specialized\xc2\xa0cells,\n \n \n \n \n \n cell\xc2\xa0specialization,\n \n \n \n \n \n root\xc2\xa0hair\xc2\xa0cell,\n \n \n \n \n \n blood\xc2\xa0vessels,\n \n \n \n \n \n genetic\xc2\xa0information,\n \n \n \n \n \n egg\xc2\xa0cell,\n \n \n \n \n \n female\xc2\xa0cell,\n \n \n \n \n \n corona\xc2\xa0radiata,\n \n \n \n \n \n zona\xc2\xa0pellucida,\n \n \n \n \n \n electrical\xc2\xa0impulse,\n \n \n \n \n \n the reactivity of metals,\n \n \n \n \n \n naming salts,\n \n \n \n \n \n oxygen reaction,\n \n \n \n \n \n water reaction,\n \n \n \n \n \n acid reaction,\n \n \n \n \n \n metal oxides,\n \n \n \n \n \n uses of salts,\n \n \n \n \n \n examples of salts,\n \n \n \n \n \n inverted pyramid,\n \n \n \n \n sound\xc2\xa0energy,\n \n \n \n sound\xc2\xa0pitch,\n \n \n \n high-pitched\xc2\xa0sound,\n \n \n \n sound\xc2\xa0vibration,\n \n \n \n wave\xc2\xa0vibration,\n \n \n \n low-pitched\xc2\xa0sound,\n \n \n \n sound\xc2\xa0frequency,\n \n \n \n sound\xc2\xa0amplitude,\n \n \n \n wave\xc2\xa0amplitude,\n \n \n \n energy\xc2\xa0transfer,\n \n \n \n electric\xc2\xa0bell,\n \n \n \n sound\xc2\xa0travel,\n \n \n \n sound\xc2\xa0waves,\n \n \n \n speed\xc2\xa0of\xc2\xa0sound,\n \n \n \n light\xc2\xa0travel,\n \n \n \n sound\xc2\xa0production,\n \n \n \n guitar\xc2\xa0strings,\n \n \n \n volume\xc2\xa0control,\n \n \n \n high\xc2\xa0frequency,\n \n \n \n low\xc2\xa0frequency,\n \n \n \n high-frequency\xc2\xa0sound,\n \n \n \n low-frequency\xc2\xa0sond,\n \n \n \n measurement,\n \n \n \n difference,\n \n \n \n heat and temperature,\n \n \n \n flow of energy,\n \n \n \n measuring temperature,\n \n \n \n insulators,\n \n \n \n specialized organisms,\n \n \n \n peristalsis,\n \n \n \n pepsinogen,\n \n \n \n emulsification,\n \n \n \n alimentary canal\n \n \n
\n