Your teeth
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Answer:
Mutations and sexual reproduction increase genetic variation in a population. Natural selection occurs when environmental pressures favor certain traits that are passed on to offspring. ... Individuals may mutate, but natural selection acts by shifting the characteristics of the population as a whole.
Explanation:
Because it is polar and it is to large to cross the membrane and because the concentration gradients are to strong so they have to be diffused.
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It would be pictorial data cause historian's use historical pictures.
More negatively charge than the outside.
