Download Environmental Science MCQ App | Ozone Depletion MCQ e-Book PDF | 331
Environmental Science MCQs (University Level) From Textbook

Environmental Science MCQs – Certification Test 331

Ozone Depletion MCQ (Question 331) – App & e-Book Download

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MCQ 331: Over the heavily polluted areas of America and Europe, ozone level has fallen about:

  1. 0.03
  2. 0.07
  3. 0.09
  4. 0.02

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