Question

Explain in brief the different layers of the atmosphere and the basic functions of the main layers.

Answer 1

Layers of atmosphere	Distance from earth (approximate)	Basic Function
(i) Troposphere	0 to 10 kilometers	The troposphere contains most of the air and oxygen in the atmosphere. This air is fit for respiration and survival of living organisms. Weather conditions are formed in the troposphere.
(ii) Stratosphere	10 to 50 kilometers	The stratosphere contains the ozone layer which prevents the harmful effects of the sun (U. V. rays) from reaching the earth.
(iii) Mesosphere	50 to 80 kilometers	The mesosphere is a very cold layer and most meteors burn up in this layer and hence are prevented from entering the earth's atmosphere
Thermosphere	80 to 320 kilometers	-