This is called a behavioral pattern. This is something deer have learned over time that gives them an advantage in the wild.
Answer:
1. B
2. B
3. A
Sorry if any of these are wrong
A. The black moths were more fit for survival, so their phenotype frequency increased.
I just did a project over this in biology and kinda hated it lol but there's the answer, have a gr8 day m8
Complex molecules are made up of other elements bonded with carbon. Carbon is able to bond with other molecules so easily because it has four valence electrons.