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Line 1: − In biology, an [[organism]] is called '''ectothermic''' if it lacks an internal mechanism for regulating body heat.<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia Educational Ministries, Inc. 1998</ref>+ − + − − *[[Endothermic]] − *[[Exothermic]] − − ==References== − <references/> − − [[Category:Biology]]
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==See also==