Causes of Pollution: Biology Study App | O Level Biology MCQ e-Book PDF
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O Level Biology MCQs – Certification Test 1027

Causes of Pollution: Biology MCQ (Question 1027) – Study App & e-Book Download

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MCQ 1027: Process by which harmful substances are added to environment is called as:

  1. Silting
  2. Pollution
  3. Desertification
  4. Flooding

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