amythorntonos9vuy amythorntonos9vuy

12-07-2017
Biology

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Many scientists hypothesize that the development of organisms with which ability led to the collection of oxygen in earths atmosphere

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WateredDownChimp WateredDownChimp

15-11-2018

The correct answer would be photosynthesis

Why? - oxygen built up in the atmosphere after prokaryotes became autotrophic or became able to use photosynthesis.

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