Answer :
Final answer:
Charles Darwin studied birds, iguanas, and tortoises on the Galapagos Islands, noting unique adaptations like finches with different beak shapes.
Explanation:
Charles Darwin studied birds, iguanas, and tortoises while on the Galapagos Islands. He observed the unique adaptations of the organisms, especially finches with different beak shapes that were specific to each island. These observations played a crucial role in developing his theory of natural selection.
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