The main factors responsible for the evolution of a new species from the existing ones are natural selection, genetic drift, geographical isolation, and mutation. Reproductive isolation and environmental factors on the isolated population are also responsible for the formation of new species.
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Answer:
B.
Explanation:
The main factors responsible for the evolution of a new species from the existing ones are natural selection, genetic drift, geographical isolation, and mutation. Reproductive isolation and environmental factors on the isolated population are also responsible for the formation of new species.