Water Pollution

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Across
  1. 2. What area of land drains all the streams and rainfall to a common outlet?
  2. 4. What process is used to disinfect water by adding chlorine?
  3. 6. What is the accumulation of fine soil particles in water bodies called?
  4. 7. What is the term for rainwater that flows over the ground into bodies of water?
  5. 9. What is the term for liquid waste or sewage discharged into a river or the sea? Filtration What is the process of removing particles from water by passing it through a filter?
  6. 11. What is the waste water from homes and businesses called?
  7. 12. What term describes how clear or cloudy water is?
  8. 13. What type of precipitation contains high levels of sulfuric or nitric acids? Bacteria What microorganisms can indicate water pollution when found in high numbers?
Down
  1. 1. What chemicals used to kill pests can also pollute water?
  2. 3. What is the method of supplying water to crops that can contribute to runoff?
  3. 5. What substances can cause excessive plant growth in water bodies when overabundant?
  4. 8. What is the accidental release of petroleum into the environment called?
  5. 10. What term refers to the systems for the safe disposal of human waste?