Thermal pollution reduces amount of _________ gas in water.

Environment protection Act was established in

The Eumycetes and ______ are micro organisms responsible for degradation.

Most of the environmental problems are due to increase of

Waste water released from homes and industries is called

Which rays enter into earth, if ozone layer is destructed

Industrialization and _______ increases global warming.

Air contains ___ % of oxygen.

CFC destroys ______ layer of earth.

Carbon dioxide and _________ are the green house gases.