Question

what is the primary role of decomposers in a food web? to provide a source of energy for the producers in the ecosystem to compete with producers for energy and other resources to control the population of producers and consumers to recycle energy and materials from dead producers and consumers

Explanation:

Decomposers break down dead organisms (producers and consumers). This process recycles nutrients (materials) back into the ecosystem. For example, fungi and bacteria decompose dead plants and animals. They release minerals and organic matter that can be used by producers again. They do not provide energy to producers directly (producers get energy from sunlight via photosynthesis). They don't compete with producers for energy (producers use sunlight, decomposers use dead organic matter). They don't control producer/consumer populations in the way predators do (their role is decomposition/recycling).

Answer:

to recycle energy and materials from dead producers and consumers