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On his visit to the Galapagos Islands, Charles Darwin discovered several species of finches that varied from island to island, which helped him to develop his theory of natural selection. It is believed that all of these species had one common ancestor and, over time, evolved into different species. After the burst of speciation in the Galapagos, a total of 14 species would exist: three species of ground-dwelling seed-eaters; three others living on cactuses and eating seeds; one living in trees and eating seeds; and 7 species of tree-dwelling insect-eaters. The finches varied mainly in the size and shape of their beaks. What statement BEST describes the speciation of the different finch species?

A The species all live on different islands.


B The different species no longer interbreed.

C The species eat different foods.


D The species no longer share any similar traits.

User Hailin Tan
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C because the passage is talking about their diet!
User Velvetkevorkian
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Answer: C) The species eat different foods.

Explanation: The passage mentions that the finches varied mainly in the size and shape of their beaks, which is directly related to their diet. The different species of finches have adapted to different food sources available on the Galapagos Islands. For example, some species eat seeds from the ground, others eat seeds from cactuses, and some eat insects from trees. These variations in diet and feeding habits have led to the evolution of different finch species.

User PhilPursglove
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