| A | B |
|---|
| surface water | freshwater that is above ground |
| watershed | entire land that is drained by a river |
| groundwater | water that seeps down and is stored underground |
| aquifer | large amounts of ground water may be stored in underground rock formations |
| recharge zone | area of land from which the groundwater originates |
| desalinization | removing salt from the salt water |
| water pollution | introduction of chemical, physical, or biological material into water |
| point pollution | pollution that is discharged from a single source |
| non point pollution | pollution that comes from many sources |
| bioaccumulation | the amount of toxins stored in tissues |
| artificial eutrofication | eutrofication cause by humans |
| thermal pollution | excessive amounts of heat added to the earth |
| exxon valdez | oil spill in price william sound in 1989 |
| plastic | a significant ocean pollutant because it does not break down easily |
| point pollution | relatively easy to regulate and control type of pollution |
| methods of desalinization | distillation and reverse osmosis |
| alaska | has 40% of the U.S. fresh water |
| dam | structure built across a river or stream that prevents water from traveling downstream |
| icecaps and glaciers | has 76% of the 3% freshwater |
| groundwater | has 23% of the 3% freshwater |
