Bergmann’s rule

Bergmann's rule is an ecological principle that states that within a species of endothermic animals (animals that regulate their own body temperature), individuals __________ _____ ____ __________ _______ ________ __________ _________ _________.
__________ ______ ___ ______ __________ ________ ____ ______ _________ ___.
_________ _________ __________ ________ ______ __________ _______ _____ ___ __________ ______ _____.
____ _____ _______ __________ __________ __________ _________ ______ ________.
______ _____ _________ ____ _____ __________ _______ _____.
____ __________ ____ _________ ________ ____ ____ ___ __________.
______ _____ ____ ____ ______ ________ ____ ___ _____.
________ _______ _________ _______.
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