Which term describes organisms that break down dead matter and waste products?

• A. Producers
• B. Decomposers
• C. Consumers
• D. Autotrophs

Answer: (B)

Breaking down dead matter and waste is what decomposers do. They recycle nutrients by breaking down complex organic material into simpler substances, releasing minerals back into the soil and environment for other organisms to reuse. Fungi and many bacteria are classic examples, using enzymes to digest dead tissue, fallen leaves, and waste products. This role distinguishes them from producers, which synthesize their own organic matter (often using sunlight or chemical energy), and from consumers, which rely on eating other organisms for energy. Autotrophs produce their own food, but the specific activity described—decomposition—points to decomposers as the group performing this function.