Question:

What are the two most common gases in the atmosphere?

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a.hydrogen and oxygen

b.nitrogen and water vapor

c.oxygen and nitrogen

d.hydrogen and nitrogen

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Methane?
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The answer is a. Nitrogen and Oxygen. Nitrogem is 78.08% of the atmosphere and Oxygen 20.95%.
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hydrogen and oxygen!

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The atmosphere is about 78% nitrogen and 21% oxygen.
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c.oxygen and nitrogen

i love it when people cheat its so funnny
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oxygen and nitrogen
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