2009 ADA Science #33

[WTN13]

Does anyone know what is responsible for Oxygen creation in the early atmosphere? I thought Orgoman said it was heterotrophs?! I can't find an obvious answer googling.

Thanks!

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[x0jessmariex3]

It is autotrophs because autotrophic organisms converted light energy to usable energy and O2, like present day plants. O2 then allowed more complex organisms to develop.

 

[lorazepam]

Yeah I think its photosynthesis by autotrophic organisms. After the atmosphere was converted from a reducing one to an oxidizing one, chemical evolution ended. Lol