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Class 11BiologyBreathing and Exchange of GasesMix Examples- Breathing and Exchange of Gases
Medium

The number of $RBCs$ in man increases if he lives at a higher altitude; this is because

  • A
    There is more oxygen in the mountains
  • B
    There is less oxygen at mountains
  • C
    More heat is required to be produced in the body for keeping warm
  • D
    There are no germs in the air in mountain
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Class 11 Questions

Class 11

Biology Questions

Chapter

Breathing and Exchange of Gases

Subtopic

Mix Examples- Breathing and Exchange of Gases

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