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AveGali [126]
3 years ago
6

What were the first organisms to release oxygen into the atmosphere?

Biology
2 answers:
OlgaM077 [116]3 years ago
7 0
Cyanobacteria reased oxygen into the atmosphere
mihalych1998 [28]3 years ago
5 0

Ans.

The first organism to produce oxygen into the atmosphere were blue-green algae or cyanobacteria that evolved around 3.5 billion years ago. They have green pigments or chlorophyll molecules that help them to perform photosynthesis.

During photosynthesis, they make their food by using carbon dioxide and release oxygen gas into atmosphere as byproduct.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

Thus, the correct answer is option). 'cyanobacteria.'

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