Q:

What is our air made up of

Answer

Air is 78 percent nitrogen, just under 21 percent oxygen, and the rest is water vapor, CO2 and small concentrations of noble gases

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More ChaCha Answers (1)

Our atmosphere is: Nitrogen (N2) 78.08% Oxygen (O2) 20.95% Argon (Ar) 0.93%.

Apr 27 2009, 11:26pm | Source: Earth's Atmosphere | www.visionlearning.com

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