Question

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 ?

Answer 1

The largest portion of photosynthesis as converted into cellulose. But this quantity varies from one geographical area to other
(a) In desert it is less than 2 kcal/$m^2$/day
(b) In grassland, deep lakes and mountain forest it is 2-12 kcal/$m^2$/day.
(c) In moist forest, shallow lake, moist grass land and moist agricultural land it is 2-40 kcal/$m^2$/day.
data can be used to calculate for cellulose secretion is the world/year increasing industrialisation increasing the use of paper. Due to this vegetation is being lost to great extent.