The process by which dissolved nitrate is returned to the atmosphere is called ,and is performed by certain types of .

the real answer is b. scintillation counter

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.