What kind of exercise requires the use of oxygen to produce energy?
strength
stretching
aerobic
anaerobic

Mini dentist offices prefer preset trays because the use of these trays

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

The first step in treating water from a river or lake is usually