Pollution
Bits of soil left in a place by moving water.
Sediment
The rapid, often poorly planned spread of development from an urban area outward into rural areas.
Urban Sprawl
Water pollution from a single place place, such as a discharge pipe at a plant that treats sewage.
Point-Source Pollution
Invasive species.
A major population center made up of a large city and smaller suburbs and towns that surround it.
Metropolitan Area
Pollution that does not come from a single location, but rather from many sources such as runoff from farms.
Non-Point-Source-Pollution
The natural environment in which a plant or animal lives.
Habitat
A developed area at the edge of a city that has manly homes, also have stores and businesses.
Suburbs.
Something that pollutes, or damages, air, soil, water.
Pollutant
An area where the soil is usually wet or covered.
Wetlands
The older part of a city. Often serves as the downtown or central business district of a city.
Urban Core
Water from rainfall that is not absorbed into the soil and instead flows into streams or lakes.
Runoff
Animals or plants that are in danger of dying out in the immediate future.
The ring of small towns and suburbs that surround a big city.
Urban Fringe.