_____ accounts for 80 percent of all cases of chronic obstructive pulmonary disease.

Question

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Smoking is the major cause of chronic obstructive pulmonary disease (COPD), accounting for 80-90% of all cases. It is a preventable risk factor and cessation can slow the progression of the disease. Hypertension, obesity, and alcoholism may contribute to the development of certain health conditions but are not the primary cause of COPD.

_____ Accounts for 80 Percent of All Cases of Chronic