The ancestors of elephants inhabited every continent except antarctica and australia. but the asian and african elephants are the only ones to survive. why?

a. dinosaurs killed all other elephant species.

b. asian and african elephants killed off other species of elephants.

c. asian and african elephants adapted well to their environments.

High blood pressure occurs when there is too much blood flowing through the blood vessels at one time. by changing the amount of water in the blood, blood pressure can change. the excretory system can to lower blood pressure.which would most likely occur in the kidney? a)more water would be transferred from the nephron.b)less water would be absorbed into the nephron.c)the amount of water in the bladder would decrease.d)the amount of water in the blood would increase.