A species that lives in the arctic have warm,fluffy coats of fur because those individuals in the species with warm fur lived longer and had more offspring.According to Darwin,what is the mechanism that led to the whole species having warm fur

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Natural selection is the mechanism that explains how certain traits or characteristics become more common in a population over time because they provide some advantage for survival or reproduction. In this case, individuals with warm fur had an advantage in the arctic environment, which allowed them to live longer and have more offspring, leading to the evolution of warm, fluffy coats of fur in the whole species.

A Species That Lives in the Arctic Have Warm,fluffy Coats