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!

The amount of paper manufactured by man exceeds the quantity of cellulose made by the plants in biosphere upto a great extent. The demand for paper is increasing day by day leading to intense deforestation by mankind. This leads to loss of vegetation, the net result of which is a disturbance in ecological equilibrium and loss of plant and animal species.