The Plants Life Nature Library pdf epub mobi txt 電子書 下載 2024


The Plants Life Nature Library

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发表于2024-11-11

The Plants Life Nature Library epub 下載 mobi 下載 pdf 下載 txt 電子書 下載 2024

The Plants Life Nature Library epub 下載 mobi 下載 pdf 下載 txt 電子書 下載 2024

The Plants Life Nature Library pdf epub mobi txt 電子書 下載 2024



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~LTHOUGH we accept as plants are green, their green

axiomatic

the

fact

that

,~ pigment, chlorophyll, is remarkable in the biological world. It makes plants,

~te literally, providers of energy to the world s host of living organisms--man

all the other animals, and even nongreen plants. For it is chlorophyll that

~s plants the unique ability to utilize the energy of sunlight for the manufac-

~0ffood; and this in turn means that fungi and animals can use plant com-

I~ands for energy and for their own building materials, either directly or

~ugh complex food chains. And to man, of course, Plants furnish thousands

:other useful products beyond the primary benefits of food.

..We: know from the fossil record that plants appeared on this earth hundreds

~millions of years ago. Although the actual origin of living matter continues

ibe a controversial question, it is likely that the earliest living "organisms,"

hose composition is unknown, derived the energy for growth and reproduc-

m by simple chemical means. Presumably they broke down chemical com-

~unds in their watery environment; eventually they utilized the sunlight by

.~ns of photoreceptive pigments. However it occurred, from some unknown,

i"imitive green organism the continuous process of evolution has given us all

~e wonderfully diverse and fascinating world of plants we live in today. They

found almost everywhere, and the adaptations they have made to special

~vir0nments, as the cactus family has to deserts, are as extraordinary as any-

~ng in nature.

The Plants Life Nature Library 下載 mobi epub pdf txt 電子書

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