(a). wrinkles (b). the skin (c). mitosis (d). glucose (e). eyesight (f). density (g). Energy (h). alleles
Q: You are presented with the quiz "aging occurs because of a loss of what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "aging occurs as cells lose their ability to divide" and "cell division is by mitosis ". So, what's the best answer to the question?
A:
(c).