sydneygarrett21 sydneygarrett21

21-05-2021
Chemistry

contestada

How did oxygen first enter Earth's atmosphere?
A. Meteorite impacts
B. Breakdown of Precambrian rocks
C. Biological processes
D. Volcanic outgassing

Respuesta :

4nadiaic 4nadiaic

22-05-2021

Answer:

I think c biological processes

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marianaarmenta96 marianaarmenta96

21-04-2022

Answer:

C. Biological processes

Explanation:

a p e x

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