Final answer:
Decomposers are essential for nutrient recycling in ecosystems. Without decomposers, nutrients would not be released back into the ecosystem, leading to a shortage of essential nutrients for producers and an overall unstable ecosystem.
Step-by-step explanation:
Decomposers, such as bacteria and fungi, play a crucial role in recycling nutrients in an ecosystem. Without decomposers, wastes and dead organisms would accumulate, and nutrients would not be released back into the ecosystem. This lack of nutrient recycling would lead to a shortage of essential nutrients for producers, which would have a domino effect on the entire food web. Ultimately, an ecosystem without decomposers would suffer and become unstable.