The answer is C. The distribution of traits in a population
Long answer short- to reproduce cells.
I believe a valley or mountain, but I am not 100 percent sure.
Pretty sure it would be the nerves attatched to the heart valve
Tiny hair cells inside your inner ear help you hear. They pick up sound waves and change them into the nerve signals that the brain interprets as sound. Hearing loss occurs when the tiny hair cells are damaged or die. The hair cells DO NOT regrow, so most hearing loss caused by hair cell damage is permanent.
