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Sage Morrow
Geography
18 October, 08:43
Which has forms 21% of earths atmosphere?
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Tyke
18 October, 09:06
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Oxygen
Explanation:
Nitrogen gas forms 78%, Oxygen forms 21% and the last 1% consists of various other gases.
Oxygen and Nitrogen are used in various compounds that are essential for plants and animals to survive.
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