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O Level Biology MCQs App Download | Pollution: Inorganic Wastes as Cause e-Book PDF

O Level Biology Competitive Exam: Certification Test 1498

Pollution: Inorganic Wastes as Cause MCQs App & e-Book: MCQ 1498

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MCQ: 1498

People may become blind due to

  1. Lead poisoning
  2. Mercury poisoning
  3. Chlorofluorocarbons exposure
  4. Ozone depletion

Pollution: Inorganic Wastes as Cause Competitive Exam: O Level Biology App & eBook MCQs

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