Ozone layer prevents most harmful wave lengths of ultraviolet light from passing through the 

The black soil of the Deccan plateau is particularly suitable for cultivation of

From 1979 to 1990, ozone layer was reduced by

What is the aim of chipko movement?

Trichloroethane is also known as

Which is NOT the example of biotic components of environment?

_________ is naturally endowed with a large quality of solar energy in the form of sunlight.

Which is NOT the example of abiotic comonents of environment?

______ are those which can be used without the possibility of the resources becoming depleted or exhausted.

  Which problem  is caused by high levels of chlorine and bromine compounds on the stratosphere?