Question

which component of the ecosystem is responsible for returning nutrients from decaying matter back to the food chain?
rocks
the sun
detritivores
herbivores

Explanation:

Rocks are abiotic and do not process decaying matter. The sun provides energy for photosynthesis, not nutrient recycling. Herbivores eat living plants, not decaying matter. Detritivores consume and break down decaying organic matter, releasing nutrients back into the ecosystem for use by other organisms in the food chain.

Answer:

detritivores