What is the role of decomposers in an ecosystem?

• A. Producing energy through photosynthesis
• B. Breaking down dead organic matter
• C. Competing for resources
• D. Preying on other organisms

Answer: (B)

Decomposers play a vital role in ecosystems by breaking down dead organic matter, which includes plant and animal remains as well as waste products. This process recycles essential nutrients back into the soil, making them available for producers like plants. Decomposers, such as fungi and bacteria, are critical for nutrient cycling; without them, ecosystems would accumulate dead material and lacking nutrients needed to sustain new plant growth. This decomposition process helps maintain the balance of ecosystems by ensuring that energy flows and nutrient cycles continue efficiently, enabling a thriving ecosystem.

The other roles mentioned in the choices do not accurately describe the function of decomposers. For instance, producers synthesize energy via photosynthesis, while competition for resources and predation involve different interactions among living organisms. Decomposers specifically focus on the breakdown of organic matter and recycling of nutrients.