Answer:
The answer is autotrophs
Explanation:
During the early days of the Earths life there was no oxygen but there was plenty of CO2 which the autotrophs took and used as food while discarding the excess which was the oxygen.
Environmental functions is the correct option. Hope it helped U. If it helped you please mark as brainliest
Answer:
C
Explanation:
The correct answer is C. because the carotenoid pigment has increased
Answer:
C
Explanation:
The water started out lower than 40°C.
