Which rock feature is the kine running between points a and b most likely to be?
a.) rock strata
b.) still
c.) fault

but there is no

i guess you forgot putting it.

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.