Which of these types of changes is a physical change? A. dissolving one substance in another
B. changing one substance into another
C. making a new substance
D. breaking apart one substance into two substances

explanation:

yes you are doing it right great gob

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.

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.

b a mature ovary of a plant.