Anything that would eat mosquitos would start to die, as they would lose their source of food
I believe the answer is adaptation through evolution. Genetic diversity in populations such as bacteria, allow for new traits to be passed along during reproduction. For example, you use hand sanitizer on your hands. The hand sanitizer kills most of the germs, but a few survive and live to reproduce, passing on their immunity to certain chemicals found in the hand sanitizer. Hope this helps!
The correct answers are under predation and under rainfall.
The reason for migration can be rainfall,
because some herbivores follow the rain to new sources of water and grass. Also, predators migrate because they follow some animal migrants that are used for food, so predation is one of the reasons that lead to migration.