Page 3 - OUR ENVIRONMENT AND POLLUTION

POLLUTION

 Human activities lead to the production of waste materials that had
deteriorated our environment and make them unsuitable for the life.

 Unwanted and undesirable substances present in air, water and soil are
called as pollutant. For example, Smoke, Dust particles etc.

 The addition of harmful, unwanted substances to the environment is called
Pollution.

On the basis of the contaminated source, pollution can be broadly classified
into mainly four types:

I. AIR POLLUTION

 The presence or introduction of harmful substances into the air that can
have harmful effects is known as air pollution.

 Air pollution can be caused by nature or man. Pollution such as forest fires,
decaying organic matter, volcanoes, dust storms, etc. are examples of
pollution caused by nature.

