A protein that is rich in Asp and Glu residues, and relatively poor in Lys and Arg residues, is likely to have an isoelectric point that is ...

d is the answer

sorry if its wrong!

no i don't feel that humans have oversubscribed some medications

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.