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The first organisms on Earth were able to transform the carbon dioxide in the air into what essential element needed for modern life? A. Hydrogen B. Helium C. Nitrogen D. Oxygen…

The first organisms on Earth were able to transform the carbon dioxide in the air into what essential element needed for modern life? A. Hydrogen B. Helium C. Nitrogen D. Oxygen…
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5 votes
The first organisms on Earth were able to transform the carbon dioxide in the air into what essential element needed for modern life?

A. Hydrogen

B. Helium

C. Nitrogen

D. Oxygen

asked
User Xoid
by
7.8k points

2 Answers

6 votes
D.) Oxygen, most mammals need good ol' Oxygen in order to turn glucose into energy. 
answered
User Balupton
by
7.9k points
1 vote
D. Oxygen
We wouldn't be here without it
answered
User Rockhammer
by
9.0k points
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