Biology, asked by payal7215, 11 months ago

define atmosphere .......

Answers

Answered by Anonymous

Explanation:

An atmosphere is a layer or a set of layers of gases surrounding a planet or other material body ... at an altitude of 100 km, is commonly used to define the boundary between Earth's atmosphere and outer space.

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Answered by nitaniya1103

Answer:

the envelope of gas surrounding the earth or any other planet mainly composed of 78% nitrogen and 21% oxygen and other gases(water vapours, dust particles etc.)

Explanation:

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