HumanChildd HumanChildd

09-04-2022
Biology

contestada

Our early atmosphere was anoxic- without free oxygen; how did this change?

A primitive organisms carrying out chemosynthesis

B primitive organisms carrying out photosynthesis

C primitive organisms carrying out cellular respiration

OR A AND B

Respuesta :

markmeadows67 markmeadows67

09-04-2022

Answer:

B

Explanation:

Our early atmosphere was anoxic and primitve organisms carried out photsynethess.

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