| A | B |
|---|
| surface water | fresh water that is above ground |
| watershed | entire area of land that is drained by a river |
| dam | a structure built across a river or a stream that prevents water from going downstream |
| groundwater | water that seeps down in this way and is stored underground |
| aquifers | underground rock formations that store ground water |
| recharge zone | the area of land from which the ground water originates |
| desalinization | removing salt from ocean water |
| water pollution | introduction of chemical, physical, and biological material into water that degrades the quality of the water and effects the animals and plants that live in it |
| pathogens | disease causing organisms, such as bacteria |
| point pollution | pollution from a single source |
| non-point pollution | pollution that comes from many sources |
| bioaccumulation | biomagnification |
| artificial eutrophication | eutrophication caused by humans |
| eutrophication | causes algae and demise of fish |
| thermal pollution | excessive amounts of heat added to a body of water |
| land | 85% of water pollution comes from the |
| Exxon Valdez | oil spill in 1989 that caused great damage to the oceans |
| Clean Water Act (CWA) | this act's purpose was to "restore and maintain the chemical, physical, and biological integrity of the nation's water" |
| wastewater treatment plants | help remove harmful things out of water |
| Inorganic chemicals | acids, salts, toxic metals |
