How does the amount of nicotine in one dose of chewing tobacco compare with that in one cigarette? a) chewing tobacco has 2.5 times more nicotine than a cigarette. b) chewing tobacco has one-half as much nicotine as a cigarette. c) chewing tobacco has the same amount of nicotine as a cigarette. d) chewing tobacco has 5 times more nicotine than a cigarette