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 Sep 21, 2018 55.6k views

5 votes

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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5 votes

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

Hope this helps!

Vic Fanberg answered Sep 23, 2018

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1 vote

A. carbon dioxide

Hope it helps :)

Sami Issa answered Sep 25, 2018

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