On the galapagos islands Darwin observed that the characteristics of many animals and plants?

On the Galapagos Islands, Darwin observed that the characteristics of many animals and plants varied significantly from those on the mainland, reflecting adaptations to their unique environments. For instance, he noted differences in finch beak shapes, which were suited to the specific types of food available on each island. These observations contributed to his theory of natural selection, illustrating how species evolve over time in response to environmental pressures. Overall, the diversity he witnessed underscored the role of isolation and adaptation in the evolutionary process.