The energetic efficiency of metabolism.
D000818:Animals; D001481:Basal Metabolism; D001833:Body Temperature Regulation; D001835:Body Weight; D004032:Diet / Q000592:standards*; D004734:Energy Metabolism; D006128:Growth; D006801:Humans; D006963:Hyperphagia / Q000378:metabolism; D009928:Organ Specificity; D012039:Regional Blood Flow; D013045:Species Specificity