Decomposers play a crucial role in the natural ecosystem by breaking down dead organic matter, such as fallen leaves, dead animals, and plant debris, into simpler substances. This process helps to recycle nutrients back into the soil, making them available for plants to use for growth. Decomposers also help to maintain the balance of the ecosystem by preventing the accumulation of dead matter, which could otherwise lead to the spread of disease and the depletion of resources. Overall, decomposers play a vital role in the decomposition and recycling of organic matter, contributing to the sustainability of the ecosystem.