What is a decomposer and what is its function in soil formation?

A decomposer is an organism, such as bacteria, fungi, and certain insects, that breaks down dead organic matter into simpler substances. This process of decomposition releases nutrients back into the soil, enriching it and promoting the growth of plants. Additionally, decomposers help improve soil structure by contributing organic matter, which enhances water retention and aeration. Overall, they play a crucial role in nutrient cycling and soil formation.