Class 8 Science MCQs – Certification Test 303

Respiration and Breathing MCQ (Question 303) – App & e-Book Download

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MCQ 303: A sheet of muscles which contracts or flatten when we breathe is called:

diaphragm
ribs
lungs
stomach

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The App: Respiration and Breathing MCQ App to Study Respiration and Breathing Notes, 8th Grade Science MCQ App, and 6th Grade Science MCQ App for science internet learning platforms.

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