Question

What is atmosphere and its importance?​

Answer 1

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Atmosphere is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body. An atmosphere is more likely to be retained if the gravity it is subject to is high and the temperature of the atmosphere is low.

IMPORTANCE OF ATMOSPHERE

The atmosphere is the layer of gases around the Earth. It is held in place by Earth's gravity. It is made up mainly of nitrogen (78.1%). It also has plentiful oxygen (20.9%) and small amounts of argon (0.9%), carbon dioxide (~ 0.035%), water vapor, and other gases. The atmosphere protects life on Earth by absorbing (taking) ultraviolet rays from the sun. It makes our days cooler and our nights warmer.

Answer 2

Atmosphere is the envelope of gas which surrounds any celestial body.

Explanation:

The importance of atmosphere of the earth are:-

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The presence of the atmosphere plays a significant role in the water cycle. It facilitates the formation of clouds which remains suspended until they are heavy enough to pour down on the earth as rain,hail or snow.

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Protects the life forms of the earth from the harmful UV rays of the sun. The presence of the ozone layer does this by reflecting the UV rays of the sun.

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It keeps the temperature of the earth constant so that it is suitable to support life.

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It protects the earth from smaller meteors.

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Contains

N2 ,O2

and other gases which are necessary to support the life form on the earth.

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Facilitates combustion and without the atmosphere combustion is not possible.