which numbered position of earth in its orbit around the sun corresponds to the winter solstice in the northern hemisphere? At this time where on earth are the sun‘s rays vertical?

b

explanation:

your answer is "the 1950's"

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•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: