O Level Biology Study App | Pollution Causes Trivia e-Book PDF
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O Level Biology MCQs – Certification Test 1333

Pollution Causes Trivia (Question 1333) – App & e-Book Download

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MCQ 1333: Risks of skin cancer is increased if:

  1. more sun bathing is done
  2. the chlorofluorocarbons are lowered
  3. the greenhouse effect is lowered
  4. more ultraviolet light penetrates the Earth

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