In the Grand Canyon, a portion of the population of a species of southern squirrel relo- cated to the northern part of the canyon. Since each population of squirrel lives in differ- ent parts of the canyon, they experience different selective pressures. Over time, the separated northern population, adapted to their new ecosystem. This even- tually led to the devolpment of a new species of squirrel in the Grand Canyon. The scenario above is an example of which type of speciation?

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