Who performed the first sucessful heart transplant

What is the most common blood type in the u.s.?

Which of the following statements about the societal costs of tobacco use is true? a. tobacco use affects the tax rate of only those individuals who smoke. b. the negative effects of tobacco use are only experienced by the smoker. c. tobacco users contribute to an overall loss of productivity. d. increased healthcare costs are mainly absorbed by tobacco users

Which of these the trachea keep food from getting into the lungs? question 17 options: larynx pharynx pituitary gland epiglottis