Our Environment...

What is Sewage?

The process of gradual increase in the earth's temperature is called_______.

The Solid part of the Earth comprising rocks forms the

The cutting down of trees on a large scale is called

Non-biodegradable waste is one of the major cause of land pollution. Which one of the following is a better option to get rid of non- biodegradable waste?

The most important reason for ozone layer depletion is the production and emission of _________ which is used in refrigerator and air conditioners.

Forests are called as the 'lungs of nature" why?

The whole mass of air surrounding the Earth is called

Contamination unwanted substances into water is called _____.

The _________ is the only planet in our Solar System known to have life.