Which of the following diseases are occupational respiratory disorders?

The increase in the incidence of asthma during certain seasons is primarily due to:

Which disease results in the lungs not receiving enough oxygen to survive?

$A$: Emphysema is a chronic obstructive pulmonary disease,causing irreversible distension and loss of elasticity of the alveoli.
$R$: Emphysema is preventable if chronic exposure to smoke (cigarette and others) and pollutants is avoided.

Give scientific reason: $(1)$ Smoking is a cause of hypertension.

Name the respiratory disorder in which the alveolar surface area involved in gas exchange is significantly reduced due to damage in the alveolar walls.