Question

recycling of matter in ecosystems
18
directions: select each correct answer. more than one answer may be correct.
how do decomposers help an ecosystem?
decomposers restore essential nutrients to an ecosystem.
decomposers use sunlight to make food for an ecosystem.
decomposers keep dead matter from \piling up\ in an ecosystem.

Explanation:

• Decomposers break down dead organic matter, releasing nutrients like nitrogen and phosphorus back into the soil/water, which producers use, so they restore essential nutrients.
• Organisms that use sunlight to make food are producers (plants, algae), not decomposers.
• By breaking down dead plants, animals, and waste, decomposers prevent this organic material from accumulating excessively in the ecosystem.

Answer:

• Decomposers restore essential nutrients to an ecosystem.
• Decomposers keep dead matter from "piling up" in an ecosystem.