I believe the answer is c
T<span>he cell requires oxygen, and eukaryotic cells are expensive to run. they require a lot of energy and nutrients, and oxygen is one such component. the oxygen is necessary for aerobic respiration, which allows the cell to do a lot, including evolve, proliferate, adopt new niches, habitats, biochemical habitats, sustain life in extreme conditions, and perhaps eventually co-operate with other cells and create multicellular life. Multicellular life is virtually impossible without aerobic respiration. </span>
The answer is A:<span> Metamorphic rocks</span><span> may display two different grain sizes.</span> :)
Answer:
Angiosperms evolved during the late Cretaceous Period, about 125-100 million years ago.
hope it helps.