water pollution by austin lansing

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Across
  1. 4. an entire area of land that is drained by a river
  2. 7. pollutants found in salt water
  3. 8. an underground rock foundation that contains water
  4. 9. pollution that comes from many sources
  5. 11. freshwater that is above ground in lakes, ponds, rivers, and streams
  6. 13. water that seeps down through the soil and is stored underground
Down
  1. 1. disease causing organisms that enter untreated waste water or fecal matter
  2. 2. occurs because of the introduction of inorganic nutrients into a body of water through sewage and fertilizer runoff
  3. 3. the introduction of chemical, physical, biological agents into water that lowers the quality of the water and affects the organisms that depend on it
  4. 5. pollution that is discharged from a single point
  5. 6. when excessive amounts of heat are added to a body of water
  6. 10. the area of land from which the groundwater originally started
  7. 12. the cycle of processes by which water circulates between the earths oceans, atmosphere, and land
  8. 14. a structure built across a river or a stream that restricts the flow of water traveling downhill