_____ created oxygen in the early atmosphere. Was it a)Photosynthetic bacteria b)Asteroids hitting the earth c)Plankton d)Volcanic eruptions e)Forests

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Photosynthetic bacteria created oxygen in the early atmosphere.

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Asked 11/16/2010 1:13:26 PM

Updated 9/18/2018 5:25:43 AM

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soumen314

Photosynthetic bacteria created oxygen in the early atmosphere.

Added 9/18/2018 5:25:43 AM

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Confirmed by Sting [9/18/2018 6:24:59 AM]

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andronep

In stratigraphy you study rock strata.

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