In broad terms, finches. In specific terms, he observed how over time, the beak sizes and shapes of said finches changed to adapt to the food sources available.
I hope I was able to help. Best of luck.
The right answer for the question that is being asked and shown above is that: "B. birds have beaks adapted to break open hard shells." The adaptation would most likely be found in organisms living in the rainforest is that <span>birds have beaks adapted to break open hard shells</span>
