Which process in living things evolved as oxygen levels increased in earth's atmosphere?

a. photosynthesis

b. aerobic respiration

c. glycolysis

d. fermentation

Answer;

-Aerobic respiration;

Explanation;

-Aerobic respiration is the process in living things that evolved as oxygen levels increased in earth's atmosphere. Aerobic respiration is the process in which cellular energy is produced in the presence of oxygen. Cells breakdown nutrients, such as glucose, in the mitochondria to produce energy in the form of ATP which can be used by the cells.

I believe the correct answer from the choices listed above is option B. The process by which living things evolved as oxygen levels increased in earth's atmosphere would be aerobic respiration. This process involves the consumption of oxygen. Hope this answers the question.