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4 Written questions

3 Multiple choice questions

  1. the addition of any substance that has a negitive effect on the water or any of the living things that depend on the water
  2. is a measurement of the substances in water besides water molecules.
  3. is the process of passing water through a series or screens that allow the water through but not larger solid particles

3 True/False questions

  1. point sourcea specific source of pollution that can be identified


  2. nonpoint sourcea widely spred source of pollution that tat cant be tied t a specific point


  3. Sewageduring primary treatment deposits of fine solids settle out from the wastewater


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