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Class 11BiologyBreathing and Exchange of GasesHuman Respiratory System
Easy

Number of alveoli in human lung is about

  • A
    One million
  • B
    More than two millions
  • C
    More than five millions
  • D
    More than seven millions
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Class 11 Questions

Class 11

Biology Questions

Chapter

Breathing and Exchange of Gases

Subtopic

Human Respiratory System

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