Which of the following is a major effect of aging on the respiratory system?

Question

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As people age, their breathing capacity decreases due to changes in lung tissue and weakening of respiratory muscles. This can lead to difficulties with activities of daily living and increased risk of respiratory infections. Decreased cough and secretions and infrequent pneumonia and lung infections are not major effects of aging on the respiratory system. Increased chest muscle strength is not commonly associated with aging, and lungs clogged with environmental wastes may occur in certain occupations or lifestyle behaviors but are not a general consequence of aging.

Which of the Following Is a Major Effect of Aging