2. Which of the following is NOT an organ of the skeletal system?
a. bone
b. cartilage
C. muscle
d. None of the above

Which of the following is not an internal factor of decision making? a. ethics b. emotions c. peer pressure d. attitude

Ihave a really high metabolism and only weigh 70 pounds (13 almost 14). people always ask me two questions: do you ever eat and how do you eat so much and stay so skinny.i am worried that a high metabolism wont me forever. what are some safe steps i can take to maintain being fit. (also, i already work out i am a dancer so i get cardio a lot)

What should you not do when doing abdominal workouts? a. keep your chin off your chest b. keep your head aligned with the spine c. put pressure on your neck d. all of the above