a book weighs 16 N and is placed on a self that is 2.5 m from the ground. what is the gravitational potential energy of the book

b. lithosphere, asthenosphere, mesosphere   is the answer most likely

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.

which