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 components of an ecosystem…Which of the following substances is not complex…Which of the following substances does not have van…Which of the following does not contribute to the…Which of the following substances is not usually…