Answer:
Unlike energy, matter is recycled in ecosystems. Decomposers release nutrients when they break down dead organisms. The nutrients are taken up by plants through their roots.
Step-by-step explanation:
The cycling of matter and the flow of energy within ecosystems occur through interactions among different organisms and between organisms and the physical environment. ... Energy from light is needed for plants because the chemical reaction that produces plant matter from air and water requires an energy input to occur.