G7-Chap 18

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Across
  1. 2. A pipe carrying sewage
  2. 6. Solid Waste extracted in sewage treatment
  3. 7. Micro-organisms which causes cholera
Down
  1. 1. A chemical to disinfect water
  2. 3. water Used water
  3. 4. A word related to hygiene (sanitation) waste matter discharged from human body
  4. 5. Liquid Waste Products