Use Natural Selection to explain HOW the flying bird that first settled on Mauritius might have evolved into the flightless dodo.

the actual answer was 160934

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.