| − | 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> | + | 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> |