Which macromolecules consist of long chains of amino acids

a chain link fence because there so tiny even my albino donkey can't get out

answer; i believe the correct answer is (data); /// good luck

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.