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ScienceQuiz 2
| Term | Definition |
|---|---|
| tributary | The streams and small rivers that feed into a main river. |
| watershed | The land area that supplies water to a river system. |
| divide | One watershed is separated from another by a ridge of land |
| reservoir | A lake that stores water for human resource |
| nutrients | are substances such as nitrogen and phosphorus that enable plants and algae to grow |
| eutrophication | The nutrients that build up in a lake over many years |
| wetland | is a land area that is covered with a shallow layer of water during some or all of the year |
| permeable | Materials that have large and connected pores allowing water to pass through |
| impermeable | Materials that water cannot pass through easily |
| saturated zone | The area of permeable rock or soil that is totally filled, or saturated with water |
| water table | the top of a saturated zone |
| unsaturated zone | the layer of rocks and soil above the water table |
| aquifer | Any underground layer of permeable rock or sediment that holds water |
| artesian well | a well where water rises because of pressure within an aquifer. |