Question

which of the following is the best explanation for why finches on one of the island in the galapagos have large beaks while finches on another island have small have beak

Answer 1

Darwin wondered about the changes in shape of bird beaks from island to island. So-called cactus finches boast longer, more pointed beaks than their relatives the ground finches. Beaks of warbler finches are thinner and more pointed than both. These adaptations make them more fit to survive on available food.