Biology · Human Respiratory System
External respiration is divided into which two steps?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Inhalation and Digestion
- 2Circulation and Exhalation
- 3Breathing and Exchange of gases✓
- 4Internal respiration and Cellular respiration
Correct answer
Breathing and Exchange of gases
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