Which gas regulates the breathing rate in humans?

A ) Oxygen

B ) Nitrogen

C ) Helium

D ) Carbon dioxide ✅

Related Questions
  1. Oxygen moves from the alveoli into the blood by----:
  2. Diaphragm is a thin skeletal muscle in body-----:
  3. Frog respires through------:
  4. What is alveoli?
  5. Length of the trachea (windpipe) in an adult person is----:
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