The joint stiffness that occurs with aging is typically due to changes in within the joint.

the answer is: reproductively

i think i spelled it wrong lol

anyways hope i

-lavira: )

ur answer is e & d

explanation:

within 30 of the equator hope this

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.