What is the use of planaria in 14000000 letters

answer; the above answer to the above statement is (true)

not sure if this is what you'r looking for eubacteria and archaebacteria

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.