A body chemical that controls growth and activity is a . vestige
cell
villi
hormone

It’s a hormone.

I don't really know but it is endocrine system? Growth hormone activity during your sleep time so it  D (hormone)

Explanation:

hope it helps

all answers true and false

explanation:

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.