The contractile vacuole is responsible for painting the water balance in many protists, like the euglena above. maintaining this water balance is an example ofa. equilibriumb. homeostasis  c. active transportd. passive transport

Growth of chest hair, deepening of the voice, and muscle growth are secondary sex characteristics. which most likely affects the development of these traits? testes ovaries prostate gland vulva

How do chloroplasts set plants apart from other living things

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 .