Oxygen they need to produce the energy necessary for movement

Oxygen Consumption-the amount of oxygen the muscles in the body need in order to produce energy for movement. During aerobic respiration oxygen is required to produce ATP from glucose.

answer: the first option is not an affect of aging. so the first option is the answer. (secondary sex characteristics appear)

answer; (c); to assure that workers have the right to a safe workplace and that it is the employer's responsibility to provide safe and healthy workplace;