al0lejazNic al0lejazNic

23-12-2016
Biology

contestada

I need help.... Cyanobacteria formed colonies called stromatolites. These used to be plentiful. What role did they contribute to the atmosphere?

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risingstarl96a1 risingstarl96a1

23-12-2016

Answer - Cyanobacteria aka Algae that contributed in creating O2 for the atmosphere as a byproduct thru Photosynthetic.

Reason - Of course Algae make up mainly the whole world in waters and they do photosynthesis to give off oxygen in the atmosphere.

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