the answer is c. ecosystem i got a 100% on the test
after the evolution of the first living cells, fermentation wasn't needed, because aerobic respiration was now doable, since there was more oxygen in the air now. also, as the temperature increases, it becomes more energy consuming to conduct fermentation over aerobic respiration.
Hope this helps :)
I don't know becuase you didn't we have to do it again soon to get a new one and I will be there in a yyyyyeueheh min to get there by then
