Chapter 17 Vocabulary

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Across
  1. 6. principle law governing pollution control in the Nation's waterways
  2. 7. the removal of biodegradable organic matter and suspended solids through the processes of aeration and filtration
  3. 9. rapid increase/accumulation of algae in a body of water due to excess nutrients
  4. 14. sewage is stored in a basin where solids settle to the bottom and oil and lighter substances rise to the top
  5. 19. a single identifiable source of pollution
  6. 20. reduced level of oxygen in the water
  7. 21. sets standards for drinking water quality and monitors states, water suppliers, etc. who enforce those standards
Down
  1. 1. bacteria that can grow and live when oxygen is present
  2. 2. excess of nutrients in water, typically from runoff
  3. 3. the amount of oxygen that is present in water
  4. 4. water testing method used to determine active fecal waste amount
  5. 5. natural chemical found in soil, air, and water; major fertilizer
  6. 8. runoff from rain and snow melt bring pollutants into water
  7. 10. wastes that can be decomposed by oxygen-requiring bacteria
  8. 11. amount of dissolved oxygen measured at specified distances from a pollution source in water
  9. 12. a bacterium, virus, or microorganism that causes disease
  10. 13. large collection of trash located in the central North Pacific Ocean
  11. 15. the final stage of the multi-stage wastewater cleaning process; removes inorganic compounds, bacteria, viruses, and parasites
  12. 16. an element that provides a quarter of all necessary nutrients for growth
  13. 17. bacteria that can grow and live when oxygen is not present
  14. 18. underground sewer through which domestic wastewater flows for sewage treatment