Organic matter refers to the material that comes from living organisms, including plants, animals, and microorganisms. It consists of carbon-based compounds and is a crucial component of soil, contributing to its fertility and structure. When these organisms die or produce waste, their remains decompose, enriching the soil with nutrients that support new plant growth. In ecosystems, organic matter plays a vital role in nutrient cycling. It helps retain moisture in the soil and provides a habitat for beneficial soil organisms like earthworms and bacteria. These organisms break down organic matter, releasing essential nutrients that plants need to thrive, thus sustaining the overall health of the environment.