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:The maintenance of a stable internal environment…Which of the following statements about the…Which of the following practices does not replenish…A body of mass 36kg falls through a viscous liquid…The body temperature of a mammal has to be…