25-01-2017
Biology

contestada

which gas forms less than one percent of the atmosphere, but is essential to life?

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

Respuesta :

Faith08 Faith08

25-01-2017

A. carbon dioxide

Hope it helps :)

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Аноним Аноним

25-01-2017

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

Hope this helps!

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