D is your answer
hope this helps
I'll say Graph C cause both Graph A and Graph C look slighty different but both are close to being the same but in Graph C it shows different Figures Both don't match each other hence Population of birds in Graph C are specialized in different types of food.
They do the same thing that all living and breathing things do! They breathe! When they breathe they are doing the same thing you are doing all day everyday. Inhaling oxygen and exhaling carbon dioxide.