O Level Biology Learning App | Biological Science MCQs e-Book PDF
O Level Biology MCQs (O Level) From Textbook

O Level Biology MCQs – Certification Test 626

Biological Science MCQs (Question 626) – Learning App & e-Book Download

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MCQ 626: Too little carbon dioxide (CO2) in lungs leads to:

  1. no breathing
  2. over breathing
  3. under breathing
  4. asthma

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Biological Science MCQs App Download: iOS & Android Apps

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