13. A population diverges and becomes reproductively isolated due to physicalbarriers. As time goes on they are no longer able to breed successfully withone another. This is calledA. allopatric speciation.B. coevolution.C. sympatric speciation
When a population is isolated due to physical barriers, which means a geographyc isolation, and then the two resulting populations aren't able to breed succesfully with one another, is called allopatric speciation.
