In spite of wanton clearance done by human beings one third
of the land areas of the globe is still under forests. With
primitive men, in the natural condition of forests the ideal
environment existed for them. So human brings as denizens of . #
forests had no problem in this respect. With scientific and
technological advancement civilized men have disturbed the
ecosystem. In the highly industrialised developed countries
imbalance created due to past neglect of the environment is being
viewed with concern. According to many pollution and despoliation
of environment and heedness manipulation of ecosystem, if continued
could ’destroy the life supporting system of spaceship earth’•
Man’s biggest task according to many scientists today is therefore
’Saving his environment’.