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Sati [7]
3 years ago
9

Earth's atmosphere is unique among the planets because it contains a large amount of ___________. A) oxygen B) helium C) methane

D) carbon dioxide
Biology
2 answers:
a_sh-v [17]3 years ago
4 0
The answer is A. Oxygen
MrRissso [65]3 years ago
3 0

The answer is A i had it on a test.

Explanation:

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