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 material by man annually. What a loss of vegetation!.
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Explanation: approximately 100 billion tonnes of cellulose are made per year all the plants in the biosphere
and it takes 17 full growth trees to give 1ton of paper and it is difficult to calculate the annual consumption of plant made by man because the trees fullfill our almost needs like timber ,paper , seltter , medicine etc
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