Because of their ability to undergo , viruses can rapidly evolve

Analogy- 1 is to arete as 5 is to cirque horn glacial valley hanging valley

The term equestrian relates to which animal? bulls cows horses pigs

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 .