Our Environment: How We Adapt Ourselves to it

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Allyn and Bacon, 1950 - Human beings - 607 pages

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air pressure alkali Alpha Centauri animals Arcturus axis bacteria beaker beetle Big Dipper birds body boiling boiling point bulb Bunsen burner calcium bicarbonate calcium sulfate called Callisto capillary action carbon tetrachloride Cassiopeia cause centrifugal force change of seasons chlorine clean clouds cold cold frames conservation constellations contain cool copper sulfate Courtesy cover crops crops cumulus clouds cutworm dandelion Deneb diagram disease dish dissolved distillation earth earth's atmosphere eclipse emulsify energy Epsom salts evaporate evaporating dish experiment faucet FIELD RESEARCH flower freezing fungi garbage garden garter snake gases germs glass glycerine golf ball gravity grease hard water heat Horace McFarland However insects International Date Line Jupiter larvae light liquid litmus paper longitude magnesium bicarbonate magnesium sulfate mercury meridian miles milk millibars minerals moisture moon night North Star northern hemisphere observations orbit ovules oxygen partial eclipse plants Pluto poison ivy pollen pressure cooker prime meridian Problem radiant energy rays rotation Saturn Science Discovery Book scientists season seeds septic tank sewage shrubs skin Sky Parade soap sodium hydroxide soft water soil solar system solution spring stamens star map substances sun spot surface tank teeth temperature test tube thermometer toad tooth decay total eclipse trisodium phosphate tube typhoid fever Uranus vegetables Vitamin warm warm front washing soda watch glass water cycle water softeners water supply water table weather weather map weeds winter wire gauze Yerkes Observatory

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