Apopulation of pine trees with long needles is separated from a population of pine trees with short needles by a large valley. which of the following is most likely to occur? a: the population of long-needle pine trees will die out. b: the population of short-needle pine trees will die out. c: the two populations will evolve together and show cospeciation. d: the two populations will evolve separately and become their own species.

Option D.

The two populations will evolve separately and become their own species.

Explanation:

This process is called allopatric speciation.

Allopatric speciation is a process where two populations that are separated by geographical barrier evolved separately. Populations evolved separately due to environmental differences.

From the question, the pine with long needles are separated from pine with short needles by a valley(,physical barrier) will make the to populations evolve separately.

b is the correct answer

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