ANATOMY

Detailed explanation-1: -To look different from other species. To be able to eat the food readily available in the environment. To protect itself against predators.

Detailed explanation-2: -Birds that are a part of the same species have different characteristics to help them survive. The different shaped beaks picked up certain types of food better than others. This is the result in physical characteristics in the same species working to give the birds an advantage in their environment.

Detailed explanation-3: -Because the drought reduced the number of seeds and finches with bigger beaks were able to eat the larger and harder seeds so more of them survived.

Detailed explanation-4: -Q. How did different beak sizes first arise? They arose because of their need to be able to eat different food.

Detailed explanation-5: -Predict which species of finch would be most likely to survive if the weather on the Galapagos Islands gradually changed and the seeds available to the finches became larger with heavier coverings. Support your answer with an explanation. Answer: Large Ground Finches, because they have big, thick beaks.