Answer:
Individuals can't change what they already have, some individuals are born with favorable traits, those get passed on while others are less likely (unfavorable traits) to get passed on.
The Enteric Nervous System is known as the mini brain of the gut.
Anything specific? This is pretty vague.
A brain would be my answer. Or do you mean a characteristic? Then I’d pick maintain homeostasis.
If you are talking about the amount of material, it will be equivalent. But monomers are usually smaller than polymers.
