A bond forms when oppositely charged regions of a polar molecule attract other polar molecules allowing a positively charged hydrogen atom to bond to a negatively charged atom.

what map. im not blind are i?

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.