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Simple what first appeared in the proterozoic eon

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Simple what first appeared in the proterozoic eon

asked Sep 23, 2021 230k views

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Simple what first appeared in the proterozoic eon

Biology
high-school

Damir Sudarevic asked

by Damir Sudarevic

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1 Answer

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Cyanobacteria, photosynthetic organisms that produce oxygen as a byproduct first appeared.

Bobnoble answered Sep 28, 2021

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