What Are the Four Main Gases in the Atmosphere?

Answer

There are various gases in the atmosphere, but the four main gases are nitrogen, oxygen, carbondioxide and hydrogen. Other gases are krypton, ozone, neon and methane. Besides these gases, there is water vapour in the atmosphere.
Q&A Related to "What Are the Four Main Gases in the Atmosphere"
The Earth's atmosphere contains roughly by volume: 78.08% nitrogen. 20.95% oxygen. 0.93% argon. 0.038% carbon dioxide. and trace amounts of other gases, and a variable amount of water
http://wiki.answers.com/Q/What_are_the_four_main_g...
The lower atmosphere is approximately 78 percent nitrogen. The primary purpose of atmospheric nitrogen is to dilute the oxygen in the air. Nitrogen is not combustible, but oxygen
http://www.ehow.com/list_6979733_main-gases-earth_...
The primary gases that make up the Earth's atmosphere are Nitrogen
http://www.chacha.com/question/what-was-earths-fir...
Nitrogen 78% Oxygen 20.95% Argon 0.93% Carbon Dioxide 0.038% According to Wikipedia: http://en.wikipedia.org/wiki/Air. "Earth's atmosphere is a layer of gases surrounding the
http://answers.yahoo.com/question/index?qid=200708...
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