vegetation
a group of plants
Encyclopedia
watershed
An area of land that drains water into a common creek, river, lake, or sea.
wetlands
A natural or artificial wet area that is managed to hold and filter polluted runoff. This saturated land – marshes, bogs, wetlands, or swamps – serves many important natural functions such as filtering and cleaning water as well as providing flood and erosion prevention. Stormwater treatment wetlands – a natural or artificial area of saturated …
