stussyamanda stussyamanda

02-11-2017
Biology

contestada

which were the earliest oxygen-producing life-forms?
a.cyanobacteria.
b.seaweed.
c.dinosaurs.
d.ferns.

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Аноним Аноним

02-11-2017

A. cyanobacteria is the answer!

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allyssaquigley allyssaquigley

02-11-2017

A is the answer Cyanobacteria I hope this helps

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