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O Level Biology MCQ App Download | Pollution: Sewage as Cause e-Book PDF

O Level Biology Entrance Exam: Certification Test 1231

Pollution: Sewage as Cause MCQ App Download & PDF e-Book - 1231

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MCQ: 1231

Untreated sewage may cause

  1. outbreak of epidemic
  2. cholera outbreaks
  3. typhoid outbreaks
  4. all of above

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Pollution Sewage as Cause MCQ App (iOS & Android)

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O Level Biology MCQ App (Android & iOS)

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