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WATERSHIED
| Term | Definition |
|---|---|
| biotic factors | living organisms in the environment such as plants and animal |
| abiotic factors | nonliving physical featuers of the environment such as water soil sunlight landforms and temperature |
| topography | surface featuers of a region including hills streams valleys lakes bridges tunnels and roads |
| watershed | land that water flows across or though on its way to a river or other body of water |
| wetlands | transition zone between dry land bodies of waters |
| tributaries | streams and rivers that supply larger bodies of water |
| estuary | an area where fresh water and salt water mix |