which of the following practices not needed for a healthy respiratory system?
A.Smoking cigarettes.
B.Jogging 10 minutes a day.
C.Eat variety food.
D.Take vitamins and minerals.
A.Smoking cigarettes.
B.Jogging 10 minutes a day.
C.Eat variety food.
D.Take vitamins and minerals.
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Answer:
a. smoking cigarettes
Explanation:
because smoking cigarettes causes cancers, lung diseases and COPD (chronic obstructive pulmonary disease), and thus saying that it is a practice that is not needed for a healthy respiratory system