Water Pollution Vocab

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Across
  1. 2. pollution that can be traced back to a specific point
  2. 4. POPs are concentrated through the food chain
  3. 6. pollution caused by fertilizer runoff
  4. 7. occurs when POPs are absorbed into fatty animal tissue
  5. 10. used to determine the effect that a chemical or pollutant has on a living organism
  6. 11. pollution caused by pathogens such as bacteria and viruses
  7. 13. pollution caused by a change in water temperature
Down
  1. 1. pollution caused by loose soil, sand, silt, and clay.
  2. 3. pollution from a large area
  3. 5. pollution caused by things like Pesticides, Heavy metals and industrial solvents, oil
  4. 8. a graph that shows how biological oxygen demand and dissolved oxygen in the water are affected by the addition of pollution.
  5. 9. pollutants that do not easily break down in the environment.
  6. 12. the amount of a chemical that will kill 50% of the population of that organism