asked 130k views
4 votes
The oxygen content in the atmosphere of the early Earth is thought to have increased significantly once which of these developed?

f Photosynthetic bacteria
g Amino acids
h Mitochondria
j Archaebacteria

asked
User Kayleigh
by
7.8k points

1 Answer

5 votes
f photosynthetic bacteria
answered
User Krastanov
by
8.2k points
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