What is atmosphere???????
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Answer:
The atmosphere is composed of gases, water vapour and dust particles. The proportion of gases changes in the higher layers of the atmosphere in such a way that oxygen will be almost in negligible quantity at the height of 120 km.
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The atmosphere is the layer of the air which surrounds the earth. It is a protective layer and has presence of various gases and molecules in it. It is the most essential layer of the Earth.
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