How many calories per gram do carbohydrates contain?
a. 6
b. 4
c. 10
d. 2

During exercise, the oxygen concentration in the blood increases to twice that of resting levels. t or f

Which word can describe a person's gender identity? a) female b) intersexual c) asexual d) androgynous

Which of the following defines scoliosis? a. a posture disorder characterized by the shoulders being rounded and the back hunched b. a posture disorder in which the spine curves up the back like a snake c. a posture disorder characterized by excessive curvature or arch in the lower back d. none of the above