Carbon monoxide is the least dangerous component of tobacco smoke.
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Q38: Chronic bronchitis is
A) a precancerous condition of
Q39: A regular smoker in her forties has
Q40: Which of the following is TRUE regarding
Q41: Emphysema is
A) a permanent narrowing of the
Q42: Smoking affects men's fertility by
A) causing changes
Q44: Cigarette smoke contains hundreds of cancer-causing chemicals.
Q45: Cigarette smoking can deprive the brain of
Q46: Cigarette smoking more than doubles the risk
Q47: Smoking has been proven to cause cancer,
Q48: A smoker's body can absorb cancer-causing substances
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