How can a decrease in the percent of oxygen in the air affect the movement of oxygen in the body?

decrease in o2 in air effects the movement of o2 in the body,

Explanation:

because the less o2 in the atmosphere, the muscle system of the human body will not respond correctly for movement. we wud become sluggish, and less active to conserve o2. example; moving to a higher altitude has less o2 ...