Science Today: A Layman's Handbook of Recent DiscoveriesWatson Davis |
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Page 7
... plant chemistry take place . No plant can grow without light . Without plants there would be no animals or human beings , since plants are the primary sources of their food . Thus the chemical reaction whereby light makes plant sugar is ...
... plant chemistry take place . No plant can grow without light . Without plants there would be no animals or human beings , since plants are the primary sources of their food . Thus the chemical reaction whereby light makes plant sugar is ...
Page 158
... plants . Not only so , but civilization itself was not possible until the invention of agriculture made possible the fixed abode and larger populations denied to hunters and pastoral peoples . All our food plants are flowering plants ...
... plants . Not only so , but civilization itself was not possible until the invention of agriculture made possible the fixed abode and larger populations denied to hunters and pastoral peoples . All our food plants are flowering plants ...
Page 185
... plants or as a last resort with others , cross - pollenation is exceedingly important in the biology of the higher plants . Plants with inconspicuous flowers , such as the grasses , and trees like maples and oaks , secure cross ...
... plants or as a last resort with others , cross - pollenation is exceedingly important in the biology of the higher plants . Plants with inconspicuous flowers , such as the grasses , and trees like maples and oaks , secure cross ...
Contents
THE SUN by Dr C G Abbot | 3 |
CHASING AN ECLIPSE TO THE SOUTH SEAS by Prof | 14 |
A FUTURE JOURNEY TO THE MOON by Prof John | 25 |
Copyright | |
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able activity America animals appear atmosphere aviator become building Bureau called canyon carried cause cell changes charts coast continue direction early Earth effect electric energy environment experience fact feet fires flower force forest germs give given Gurwitsch half hour hundred hunger hurricane important increase Indian insects interesting island kinds known land less light living magnetic matter means mental meteors methods miles Moon mountain national parks nature night northern notes observations operation origin pass past period plants possible practically present probably produced question race radio rays recent region scientific seen solar South species storm surface things thousands tion trees United waves weather winds winter