Warm blooded animals of cold climate have small extremities. This was stated by
A
Bergman
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B
Gloger
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C
Dollo
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D
Allen
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Solution
The correct option is D Allen Allen's rule says that the body shapes and proportions of endotherms vary by climatic temperature by either minimizing exposed surface area to minimize heat loss in cold climates or maximizing exposed surface area to maximize heat loss in hot climates.