What are the two major gases of atmosphere?
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Gases in Earth's Atmosphere
Nitrogen and oxygen are by far the most common; dry air is composed of about 78% nitrogen (N2) and about 21% oxygen(O2). Argon, carbon dioxide (CO2), and many other gases are also present in much lower amounts; each makes up less than 1% of the atmosphere's mixture of gases.
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two major gases of the atmosphere are nitrogen and oxygen
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