Until the early there were only neglible amounts of free oxygen in the atmosphere. A: Mesozic B Cenozoic C Proterozoic D Precambian

Yoshimitsu asked Feb 13, 2023

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Until the early there were only neglible amounts of free oxygen in the atmosphere.

A: Mesozic
B Cenozoic
C Proterozoic
D Precambian

Yoshimitsu asked Feb 13, 2023

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4 votes

Quite sure it is C

Mayank Bansal answered Feb 19, 2023

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