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Harlamova29_29 [7]
3 years ago
10

Which gas forms 21% of Earth's atmosphere?

Social Studies
2 answers:
lukranit [14]3 years ago
6 0

Answer:

D.) Oxygen

Explanation:

78% Nitrogen 21%Oxygen 1%Inactive gases

Bas_tet [7]3 years ago
3 0
Oxygen is the correct answer
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