Biology, asked by kaleetrimble, 1 year ago

when did cyanobacteria start producing pure oxygen

Answers

Answered by 111soul111
1

they were the first creatures on earth and they were first one who started adding oxygen into the atmosphere...

Answered by Anonymous
6

The first microbes to produce oxygen by photosynthesis were oceanic cyanobacteria. They evolved into tufted microbial mats more than 2.3 billion years ago, approximately 200 million years before the GOE.


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