13-05-2017
Biology

contestada

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

Respuesta :

KelseyPalmer08 KelseyPalmer08

13-05-2017

D. Oxygen
We wouldn't be here without it

Answer Link

asspengrey asspengrey

13-05-2017

D.) Oxygen, most mammals need good ol' Oxygen in order to turn glucose into energy.

Answer Link

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