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Which gas forms 21% of Earth's atmosphere? A. argon B. carbon dioxide C. nitrogen D. oxygen
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Which gas forms 21% of Earth's atmosphere? A. argon B. carbon dioxide C. nitrogen D. oxygen
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Jul 7, 2021
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Which gas forms 21% of Earth's atmosphere?
A.
argon
B.
carbon dioxide
C.
nitrogen
D.
oxygen
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Trusk
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Answer:
D.) Oxygen
Step-by-step explanation:
78% Nitrogen 21%Oxygen 1%Inactive gases
Joshweir
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Jul 10, 2021
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Joshweir
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7
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Oxygen is the correct answer
ThomasWeiss
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Jul 11, 2021
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