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4 Written questions

3 Multiple choice questions

  1. is a measurement of the substances in water besides water molecules.
  2. an underground tank containing bacteria that treat wastewater as it passes through
  3. the aera around the septic tank that the water filters through

3 True/False questions

  1. Sludgeduring primary treatment deposits of fine solids settle out from the wastewater


  2. Sewagethat wastewater and the different kinds of wastes in it


  3. Filtrationis the process of passing water through a series or screens that allow the water through but not larger solid particles


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