Arecurring sleep stage during which most vivid dreams commonly occur is known as sleep.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

the answer is d.) homologous; have mammary glands

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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