Organic matter refers to the decaying or decomposing material derived from plant or animal sources. This material is rich in carbon and nutrients, and plays a crucial role in soil fertility and nutrient cycling in ecosystems. Understanding the dynamics of organic matter in soils, sediments, and water is important for various fields such as agriculture, environmental science, and biogeochemistry. Researchers in this area study the processes involved in the decomposition and cycling of organic matter, its interactions with microorganisms and other soil organisms, and its impact on soil health and ecosystem functions. This research also has implications for sustainable agriculture practices, climate change mitigation, and ecosystem management.