How do nicotine and tobacco cause cancer?
a. by decreasing blood-sugar levels
b. by damaging or changing a cell's DNA
c. by increasing heart rate
d. by increasing phlegm and mucous production

Why is a lunch consisting of pizza, fruit, and salad a better choice than a lunch with the same number of calories from pizza alone? a)both lunches provide the same amount of energy but the lunch of pizza, salad, and fruit provides more nutrients. b)both lunches provide the same amount of nutrients but the lunch of pizza, salad, and fruit provides more energy. c)both lunches are healthful but the lunch of pizza, salad, and fruit provides more energy for metabolism. d)both lunches are healthful but the lunch of pizza, salad, and fruit is likely to have a higher fat content.

List three reasons people may begin using tobacco

Why is it important for health care professional to stay informed about new development?