The unit of evolution is the population. A population consists of organisms of the same species that live in the same area. In terms of evolution, the population is assumed to be a relatively closed group. This means that most mating takes place within the population.

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Indicate what happens to the concentration of pb2+ in each cell. indicate what happens to the concentration of in each cell. the

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An increase in venous return _______. occurs during exercise results in decreased preload decreases edv occurs with severe blood

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