Which of the following groups of foods are not recommended for infants under six months because they may produce food allergies?

Maintaining a healthy weight allows the respiratory system to work more effectively because a. oxygen is being delivered more adequately. b. the heart does not have to pump as forcefully. c. the capillaries are constricted. d. the lung capacity allows for small amounts of air.

Which of the following will abstinence most likely to improve? a.creativity b.physical strength c.flexibility d.emotional health

Whats the difference between epinephrine and norepinephrine?