5 Questions
Which gas makes up the largest percentage of dry air by number of molecules?
Nitrogen
What is the percentage of oxygen in dry air by number of molecules?
20.95%
What is the percentage of carbon dioxide in dry air by number of molecules?
0.04%
What is the average percentage of water vapor in air at sea level?
1%
What is the second most abundant gas in dry air by number of molecules?
Argon
Test your knowledge about the Earth's atmosphere and its role in supporting life. Explore topics like air composition, pressure, greenhouse effect, and more in this informative quiz!
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