Answer:
below
Explanation:
when an organism decays, burning fossil fuels, respiration/breathing.
These are the top three that come to my head, hope this works :)
Actually it is the females the mostly build the nests the males will help build it sometimes both males and females will build it but typically it is females and that goes for all birds.
"Females typically build nests, but sometimes both parents or just the male"
(C.) The layers of the Earth are uniform in thickness
This is untrue. The mantle is far large than the crust and there are other large size differences.
