'colored feathers that camouflage birds from predators are found in the majority of the current bird population' would be correct since that would only focus on one species instead of many, natural selection includes all species, not just one.
The main purpose is communication. like when you stub your toe , your nervous system communicates to your brain to react and have pain
The principle fuel used as a petrol substitute for road transport vehicles is bioethanol. Bioethanol fuel is mainly produced by the sugar fermentation process, although it can also be manufactured by the chemical process of reacting ethylene with steam.
Basically, a plant can be considered as bioethanol becacuse it is a sugar fuel for animals. Animals consume plants for fuel to survive.
Answer:
Oils repel water, so it helps these animals keep their fur dry, which helps them stay warm.
D is correct the population will increase
