water pollution

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Across
  1. 4. - The levels of this gas decreases with thermal pollution or due to algal blooms
  2. 5. One of the three types of agents that degrade water quality and adversely affect the organisms living there
  3. 8. - The substance added to disinfect the water before it is released into a body of water
  4. 9. - What is to improve according to federal laws such as the Clean Water Act (two words)
  5. 11. The process that allows contaminants to reach an aquifer from unlined landfills and industrial wastewater lagoons
  6. 12. The type of source pollution that is responsible for 96 percent of polluted bodies of water in the US
Down
  1. 1. Water that contains waste from homes or industry
  2. 2. The buildup of pollutants at higher levels of the food chain
  3. 3. Plant nutrient responsible for algal blooms
  4. 6. The largest source of nutrients that cause artificial eutrophication
  5. 7. The type of pollution that can occur when power plants and other industries discharge warm water into a lake or river
  6. 10. The type of pollution that may result from aging underground storage tanks that leak