If jennifer wants to reduce the risk of having a baby with a birth defect caused by an environmental substance like drugs or alcohol, she should try her best to avoid these substances during

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .