The answer is (B. Medium) because it has to travel through the ear drum evenly without busting it. Hope this helped :)
OK. First, there's the heart. Then there's the blood vessels. The arteries. Then the veins. And then there's the capillaries. <span />
Cell division is how they reproduce
Answer:
I do Agree with your statement of growing populations, but I am not sure what else you want me to say.
