| A | B |
|---|
| surface water | water that is visible on the surface of the earth. |
| recreation | play or amusement |
| watershed | area of land from which precipitation drains into a particular river,stream,or lake |
| seep | to soak into something |
| water table | the top of the groundwater layer |
| aquifer | underground layers of rock,sand,or gravel that trap,store and transport water |
| depleted | used up |
| recharge | to refill an aquifer |
| recharge zone | area in whichwater travels downward to become part of an aquifer |
| permeable | allowing water to flow through |
| impermeable | not allowing water to flow through |
| well | hole that is dug or drilled to get water form earth |
| scarcity | not having enough of something needed |
| industry | making and selling of a particular kind of good or service |
| drought | an unusually long period of little rainfall |
| water treatment | process of removing contaminants from water to make it safe for humans |
| pathogen | an organism that can cause disease |
| irrigate | to artificially supply land with water for agricultural or landscaping |
| landscaping | improving the natural beauty of a piece of land |
| divert | to turn from one course to another |
| sprinkler system | device used to spray water, usually in a circular pattern |
| purification | cleaning by seperating out pollutants or impurities |
| reservoir | a pond or lake, either natural or artificial for the storage of water |
| point-source pollution | pollution that comes from a particular source |
| nonpoint-source pollution | pollution that cannot be traced back to a specific source |
| runoff | rain or melted snow that flows over land to streams,rivers,lakes,and the ocean |
| virus | a nonliving microorganism that can infect cells and cause disease |
| hepatitis | a disease that damages the liver |
| cholera | an intestinal infection caused by contaminated water or food |
| dysentery | an instestinal infection marked by severe diarrhea |
| sewage | human-generated liquid pollution that flows from homes,buisnesses,and industries;also called wastewater |
| sewage treatment plant | a place where sewage is cleaned befor returning to surface water |
| organic waste | waste from living organisms |
| herbicide | a chemical used to kill weeds |
| fertilizer | an organic or inorganic plant nutrient |
| eutrophication | the process by which plant nutrients increase plant growth and decrease available oxygen |
| bioaccumulation | the process by which toxic chemical compounds aacumulate through the foo chain |
| thermal pollution | heat added to water by humans that causes ecological change |
| radioactive waste | waste that contains or is contaminated by radioactive materials |
| drip irragation | irrigation in which water is delivered in drops,directly to the plants's roots |
| gray water | wastewater that does not contain animal waste and can be used to water crops |
| low-flow | designed to use less water |
| xeriscaping | a type of landscaping that uses native and drought-tolerent plants |
