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Assoli18 [71]
3 years ago
13

What important change in the atmosphere occurred during the Proterozoic Eon?

Physics
1 answer:
melisa1 [442]3 years ago
3 0
Proterozoic Eon, the younger of the two divisions of Precambrian time, the older being the Archean Eon.

D. Methane levels decreased and oxygen levels increased, promoting aerobics life forms

Brainlessly answer pls
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