Select the correct option:
$(1)$ Nasal cavity acts as an air conditioner.
$(2)$ Cigarette smoke causes emphysema.

  • A
    Both $(1)$ and $(2)$ are correct.
  • B
    Only $(1)$ is correct.
  • C
    Only $(2)$ is correct.
  • D
    Both $(1)$ and $(2)$ are incorrect.

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....... is a chronic disorder in which alveolar walls are damaged due to which respiratory surface is decreased.

$A$ chronic disorder in which alveolar walls are damaged due to excessive cigarette smoking is

Which one of the following is the correct statement for respiration in humans?

Which one of the following is $NOT$ a psychological disorder?

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