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Class 11BiologyBreathing and Exchange of GasesDisorders of respiration system
Easy

Emphysema disease is caused by

  • A
    Cigarette smoking
  • B
    $CO_2$
  • C
    Photochemical smog
  • D
    Mercury
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11

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Class 11 Questions

Class 11

Biology Questions

Chapter

Breathing and Exchange of Gases

Subtopic

Disorders of respiration system

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