What makes it possible for the human body to grow?

the pituitary gland

Explanation:

it causes the growth hormone

answer: 45

explanationyou have to add as well to be it could be

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.