Science Olympiad Water Quality 2025 – 400 Free Practice Questions to Pass the Exam

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Which of the following best describes decomposers?

Organisms that make their own food

Organisms that consume primary producers

Organisms that break down dead material

Decomposers are crucial components of ecosystems, responsible for breaking down organic material from dead plants and animals. By doing so, they recycle nutrients back into the soil, making them available for primary producers, such as plants, to utilize. This process of decomposition is essential for nutrient cycling, ensuring that ecosystems remain healthy and productive.

The ability of decomposers to break down complex organic compounds into simpler substances allows them to contribute to the overall health of the environment. Without decomposers, waste would accumulate, and nutrients would become locked in dead matter, leading to an imbalance in the ecosystem. Recognizing the role of decomposers clarifies their importance in maintaining the flow of energy and nutrients throughout food webs.

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Organisms that compete for resources

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