Which of the following substances when lost from the body of a mammal will not be returned to the ecosystem? by Sunday | Nov 24 | Biology WAEC | 0 comments A. Sweat B. Urea C. Heat energy D. Carbon dioxide Correct Answer: Option C C. Heat energy Users Also Read These:Water and salts are both lost from the human body in?Which of the following entries is made damaged goods…Interdependence within the ecosystem can best be…Which of the following processes occurs when the…The body temperature of a mammal has to be…