It is a disease of the respiratory system characterized by stretched lungs and difficulty in breathing.
A.Emphysema
B.Colds
C.High blood pressure
D.Coronary heart disease
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It is a disease of the respiratory system characterized by stretched lungs and difficulty in breathing.
A.Emphysema
B.Colds
C.High blood pressure
D.Coronary heart disease
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Answer:
A
Explanation:
Beacuse "emphysema" is a disease of the lungs that usually ... As you breathe in air, the alveoli stretch, drawing oxygen in ... All of these changes can lead to shortness of breath.