Why are the beak size and shapes of darwin's finches different?

C) They adapted to the type of food available.

Explanation:

The beak sizes and shapes of Darwin's fiches are different because of survival of the fittest. The finches that had beaks that could get the food survived while the other died off. Thus, the number of those survived finches increased while the others decreased. The type of food available in each environment is different from the other, which is why they have different sizes and shapes.

Generally, physical characteristics are adaptations to the environment the animals lives in and large ears help the rabbit not get too hot while it's running from the predators: it can also run fast, so those two adaptations help the rabbit survive by escape the predators. Same holds for the fur - it will help the rabbit run faster without burning its feet. Finally, the double digestion helps the rabbit to obtain more energy in areas where food is scarce.