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Pollution: Sewage as Cause MCQ App Download - O Level Biology Apps (iOS & Android)

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Pollution: Sewage as Cause MCQ App Download & e-Book PDF - 1311

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MCQ: 1311

Hydrogen sulfide (H2S) and ammonia (NH3) are produced from

  1. the chimneys of factories
  2. use of chlorofluorocarbon in foam packaging
  3. decomposition of organic compounds by anaerobic bacteria
  4. treatment of acidic wastes with alkalis

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Pollution Sewage as Cause Apps (Android & iOS)

Pollution Sewage as Cause App

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