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lisabon 2012 [21]
3 years ago
5

HOW WAS OXYGEN ADDED TO THE ATMOSPHERE?

Geography
2 answers:
PilotLPTM [1.2K]3 years ago
5 0

Answer:

Explanation:

Oxygen is of no use to them, so they release it into the air. So there's a simple explanation for the Great Oxidation Event. It was the cyanobacteria, pumping out unwanted oxygen, that transformed Earth's atmosphere.

Taya2010 [7]3 years ago
3 0

Answer:

cyanobacteria

Explanation:

using sunshine carbon dioxide and water to produce the carbohydrates

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