What is a "swamp" characterized by in terms of geography?

A swamp is characterized by very wet, soft land, which is typically saturated with water for part or all of the year. This type of environment is crucial for various ecological systems, providing habitats for numerous species of plants and animals. Swamps often contain a mixture of both freshwater and brackish water and are essential for biodiversity, serving as nurseries for fish and breeding grounds for amphibians.

The presence of standing water and the soft, spongy ground allow unique vegetation such as reeds, cattails, and various types of shrubs and trees to thrive, contributing to the swamp's distinctive ecosystem. Additionally, swamps play a vital role in water filtration and flood control, as they can absorb excess water during heavy rainfall. Overall, the defining feature of a swamp is its saturated and soft land, which differentiates it from other geographic formations like dry landscapes or urban areas.