kaeppelkay kaeppelkay

12-04-2017
Biology

contestada

What was the major contributor of oxygen to earth's early atmosphere?

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PureVelocity PureVelocity

12-04-2017

It's a bacteria that grew along all the ocean coast that took in carbon and through photosynthesis, turned it into oxygen, the process took about a billion years.

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laurenhaldeman laurenhaldeman

12-04-2017

photosynthesis I believe

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