find out how much cellulose is made by all the plants in the biosphere and compare it with how much of paper is manufactured by man and hence what is the consumption of plant materials by men annually water loss of vegetation
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Explanation:
Aproximately 100 billion tonnes of cellulose are made per year by all the plants in the biosphere and it take 17 full grown trees to make one tonne of paper.Trees are also used to fulfil the other requirements of man like medicines ,timber,fruits etc.Hence it is difficult to calculate the annual consumption of plant material by man.
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