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Which gas forms less than one percent of the atmosphere, but is essential to life? A. carbon dioxide B. oxygen C. hydrogen D. nitrogen

Which gas forms less than one percent of the atmosphere, but is essential to life? A. carbon dioxide B. oxygen C. hydrogen D. nitrogen
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Which gas forms less than one percent of the atmosphere, but is essential to life?

A. carbon dioxide
B. oxygen
C. hydrogen
D. nitrogen

asked
User Denis Kohl
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2 Answers

5 votes
A. carbon dioxide forms less than one percent of the atmosphere, but is essential to life

Hope this helps!
answered
User Vic Fanberg
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7.6k points
1 vote
A. carbon dioxide

Hope it helps :)
answered
User Sami Issa
by
8.8k points
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