Cellular respiration occurs in animals and plants
Answer:
Adenine and guanine are purines, while thymine, cytosine and uracil are pyrimidines.
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Answer:
capillaries help the blood containing the things a cell needs
Explanation:
The skull size of each species!
It's the size of the skull specifically the jaw bones, that can help determine relationships of two hominid species.
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A gene pool changes throughout evolution this could be natural selection, genetic drift or a mutation. A gene pool does this to adapt with the needs of the environment it is in