Which of the following is an effect of smoking? a. a smoker's heartbeat is three times slower than a non-smokercs. b. smoking slows down your lung growth. c. smoking improves your lung function. d. teens who do not smoke suffer from shortness of breath more often than those who do smoke.

eating disorders is a fatal illnesses that cause severe disturbances to a person's eating behaviors. obsessions with food, body weight, and shape may also signal an eating disorder. common eating disorders include anorexia nervosa, bulimia nervosa, and binge-eating disorder.

answer: c more big rigs and commercial vehicles

explanation: because big rigs drive far to deliver products overnight