Which statement explains the concept of Allen’s rule?

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Aquatic mammals have blubber as insulator.

Mammals of colder climate have shorter ears and limbs.

Mammals of humid and warmer region have more melanin in their skin.

The bears undergoes hibernation during winter.

answer is B.

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Detailed Solution

Allen's rule states that the limbs, ears, and other appendages of the animals living in cold climates tend to be shorter than in animals of the same species living in warm climates. Shorter and more compact body parts have less surface area than elongated ones and thus radiate less body heat.

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