👉 Sediment is a type of rock or soil that contains organic matter, primarily plants and animals. It is composed primarily of sand and gravel, and can vary in size from small particles to large rocks. Sediments play an important role in supporting life on Earth by providing essential nutrients for plant growth and water retention, as well as serving as a natural filter for pollutants and contaminants. In the context of sedimentation, it refers to the process by which organic matter, such as plants or animals,