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alexandr402 [8]
3 years ago
12

_____ were the first organisms that released oxygen as a by-product of photosynthesis

Biology
2 answers:
Ede4ka [16]3 years ago
7 0
The answer is tiny organisms known as cyanobacteria
JulsSmile [24]3 years ago
5 0
Cyanobacteria or blue-green algae
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