Question

a population of squirrels lived together in a forest. an event occurred that caused the population to diverge into two different species over a long period of time. which of the following is most likely the event that occurred?
there was an increase in the predators in the forest.
a natural disaster occurred that separated squirrels.
the winters were unusually cold in the forest.
a disease affected the squirrel population in the forest.

Explanation:

Speciation often occurs due to geographical isolation. When a natural disaster separates a population (like squirrels), the two groups are no longer in contact. Over time, they may evolve differently due to different environmental pressures, genetic drift, and natural selection in their separate habitats. An increase in predators, unusually cold winters, or a disease would affect the whole population in the same area (without separation) and are less likely to cause divergence into two species compared to geographical separation.

Answer:

A natural disaster occurred that separated squirrels.