What happens to any matter that is not used by consumers in a food chain?

The matter that is not used by consumers in a food chain is decomposed by decomposers, which are organisms that break down dead organic matter. Decomposers include bacteria, fungi, and certain animals, such as worms and insects. They break down the complex organic compounds in dead organisms into simpler substances, such as carbon dioxide, water, and nutrients, which are then released back into the environment and can be used by other organisms. This process is essential for recycling nutrients and maintaining the balance of ecosystems.