Question

Based on the conditions of early Earth, what conclusion can you draw about the amount of anaerobic respiration that was occurring at Earth’s beginning? Explain your answer.

Answer 1

Originally there were only anaerobic resprators due to the fact that there was no oxygen in the atmosphere and there was a lot of methane. Once there started to be oxygen in the atmosphere, then this is whenever aerobic respirators started evolving, and Earth started going into the ice age as the aerobic respirators tore up the atmosphere and Earth could no longer retain its heat.