____ is the most common cause of speciation.
A) Mass extinction
B) Geographic isolation
C) The arrival of a nonnative species
D) An overlap between ecological niches
E) The loss of a keystone species

Question

Quizplus · Accepted Answer

Geographic isolation, which occurs when a population is physically separated from other populations and no longer interbreeds, is the most common cause of speciation. Over time, genetic differences accumulate in the isolated population, leading to the development of new species.

____ Is the Most Common Cause of Speciation