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26 July, 12:27

Photosynthetic cyanobacteria caused an increase in atmospheric levels of what

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  1. 26 July, 14:32
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    Photosynthetic cyanobacteria are capable of producing oxygen as a product of photosynthesis.

    It is thought that the rise in oxygen levels in the atmosphere was generated by photosynthetic cyanobacteria during the Archaean and Proterozoic Eras and that reducing atmosphere turned into an oxidizing one.
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