Water Pollution

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Across
  1. 2. reduces the usefulness of water to living things.
  2. 3. as a result of human activity. Mainly affects the dissolved oxygen level of the water, but can also adversely affect aquatic organisms (Thermal Shock)
  3. 6. wastewater and sewage in the atmosphere
  4. 9. single-celled bacteria that live in water cause
  5. 14. manure runoff, and
  6. 16. waist
  7. 17. pavement can also increase water temperature.
  8. 20. the increase or decrease of water
  9. 21. algal growth is accelerated by increased fertilizer input (mostly in the form of nitrates and phosphates) into water supplies. High concentrations of algae die and sink to the bottom of the water, where aerobic bacteria break them down, drastically reducing the lake's dissolved oxygen levels
  10. 22. generation utilize water for cooling. Runoff from
  11. 24. gully reclamation, hydroseeding, diversion ditches on roadways, cover crops, contour farming, and vegetative buffers are all examples of good soil management
  12. 26. water flow can be diverted into artificial wetlands, sediment management ponds, silt fences, dredging, and dams
Down
  1. 1. Industrial use, and
  2. 4. nutrient enrichment of aquatic ecosystems for plants. primarily in the form of phosphates and nitrates
  3. 5. water contamination with a source that is dispersed across a large area is
  4. 7. transfer heat from the water into
  5. 8. cause a drastic decrease in water temperature as cool
  6. 10. after a contaminant has been introduced to the environment, removal
  7. 11. a technique for preventing environmental contamination from water pollutants
  8. 12. the quantity of oxygen needed by bacteria that decompose organic waste in water. Low DO = High BOD
  9. 13. diseases. The source of these organisms is
  10. 15. dirt particles causing water to become cloudy. The most common type of water contamination
  11. 18. caused by mining, agriculture, improper logging methods, building, and rapid erosion
  12. 19. sewage detergents, and waste.
  13. 21. Farm runoff, residential lawn and garden runoff, and recreational facility runoff.
  14. 23. from the bottom of a reservoir is released downstream
  15. 25. water pollution that is "pointed," or has a clear cause