Alzheimer's disease is most closely linked to the deterioration of neurons that produce: a) acetylcholine.
b) endorphins.
c) epinephrine.
d) dopamine.

yes it is weird but true

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?