Question

In reference to the origin of life, photosynthesis is more ancient than aerobic cellular respiration because

Answer 1

To put it simply, plants use photosynthesis to create energy. Animals use aerobic cellular respiration. Plants were on Earth before animals were. Therefore, photosynthesis is "more ancient" than aerobic respiration.

Answer 2

can i send you the answers and can you tell me which one is ?

Answer 3

a. plants evolved before vertebrates
b. Earth's early atmosphere did not have oxygen
c. there is no reason for cellular respiration to occur without glucose from plants
d. carbon dioxide was contributing to global warming, to photosynthesizers recycled it

Answer 4

I would say the answer is A.

Answer 5

thank you so much can i send you a few more

Answer 6

The change in skull size of hominids allowed for ______.
Select one:
a. more compact brains
b. the presence of more sensory organs
c. a larger brain
d. more protection of organs

Answer 7

As hominids evolved, their skulls changed shape. As the brow and mouth areas of the skull decreased in size, the cranium increased in size. The answer would not be A, because an increase in the size of the cranium would indicate the brain itself is increasing in size as well. B would not be correct either, the number of sensory organs has not changed. D is not the right answer because the change is skull size did not really affect its ability to protect the brain. The answer would be C, a larger brain. The size of the hominid skull increased in order to make room for the larger brain.