Question

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in lung diseases like asthma, emphysema, and chronic bronchitis, air cannot flow freely through the airways, thus these are called pulmonary
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Explanation:

Asthma, emphysema, and chronic bronchitis are all conditions where there is an obstruction or limitation in the flow of air through the airways. The term "obstructive" is used to describe such pulmonary (lung - related) conditions.

Answer:

obstructive