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:Sea water taken in by a living organism can be…Which of the following does not contribute to the…Which of the following substances is not usually…Which of the following groups of substances are not…Which of the following substances does not have van…