APP Definition:Allen’s rule is a biological rule posited by Joel Asaph Allen in 1877. It states thatendotherms from colder climates usually have shorter limbs (or appendages) than the equivalentanimals from warmer climates.艾倫法則ài lún fǎ zé由喬爾·阿薩夫·艾倫于1877年提出的一......（本文共 298 字） [閱讀本文] >>
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