Which of the following substances is not recycled in an ecosystem? by Sunday | May 14 | Biology WAEC | 0 comments A. Carbon B. Energy C. Water D. Nitrogen Correct Answer: Option B B. Energy Users Also Read These:Which of the following soil fertility improvement…The substances recycled in the soil by the…Interdependence within the ecosystem can best be…Which of the following groups of substances are not…Which of the following pollutants is not usually recycled?