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Almost 79% of the earth’s atmosphere is composed of ____________. a. nitrogen b. oxygen c. helium d. carbon dioxide
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Almost 79% of the earth’s atmosphere is composed of ____________.

a. nitrogen
b. oxygen
c. helium
d. carbon dioxide

User Htea
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almost 79% of the earth's atmosphere is composed of A.nitrogen
21% is oxygen in the atmosphere
0.9% is argon in the atmosphere
rest are other gases..

so the answer is A.nitrogen
hope this helps.......
User Mycowan
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