Question Number 7 of 20 - 5th Grade Science The Chesapeake Bay is important to the larger ocean ecosystem because?
Really need help for less than 5 min plz

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.