According to the cell theory, which describes cells?

Living organisms are not created spontaneously.

Explanation:

got it right on edge test! :)

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.