Final answer:
An adaptation is a heritable trait that enhances an organism's survival and reproduction in its environment by increasing its 'fit' to its surroundings.
Explanation:
An adaptation is a heritable trait that aids an organism's survival and reproduction in its environment. It is a result of genetic variations over time that increase the population's 'fit' to its surroundings. For example, the webbed feet of platypuses, thick fur of snow leopards, and fast speed of cheetahs are all adaptations that help these animals thrive in their habitats.
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