Explain why scientists believe the Abert’s and Kaibab squirrels are examples of speciation.

Answer:

Scientists believe the Abert’s and Kaibab squirrels are examples of speciation because they were geographically isolated by the formation of the Grand Canyon. The Abert’s squirrel lives on the South Rim, while the Kaibab squirrel is isolated on the North Rim. Erosion separated the forests, preventing the two populations from interbreeding, which allowed them to develop distinct physical characteristics over time.