What is a characteristic feature of marshes?

Marshes are characterized by their location on low, flat lands, often in areas where water accumulates. These wetlands are typically found adjacent to rivers, lakes, or coastal regions and are formed in areas that can sustain standing water without being submerged. The flat topography allows for the slow movement of water and the development of rich, waterlogged soils that are ideal for supporting a diverse range of vegetation. This environment contributes to a unique ecosystem that primarily consists of herbaceous plants, such as grasses and sedges, rather than woody plants, which distinguishes marshes from swamps or forests. The position of marshes in these low-lying areas is essential for their function in flood control, water purification, and as wildlife habitats.