In football the purpose of the defense is to
physically interfere with an offensive receiver to prevent a player from catching the ball
prevent the opposing offense from advancing the ball
enter the end zone of the opposing team
prevent the offense from fumbling

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.

How harmful is it to smoke a pack of cigarettes a week?

Which of these is a sexual stereotype?