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Class 7 Science MCQs – Certification Test 86

How We Breathe MCQs (Question 86) – App & e-Book Download

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MCQ: 86

When we inhale

  1. the diaphragm is pushed upwards and the rib cage downwards
  2. both diaphragm and rib cage are pushed downwards
  3. the diaphragm is pulled downwards and the rib cage upwards
  4. the diaphragm is pushed upwards and the rib cage is pulled downwards
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