Someone help me with this

D

Explanation:

Active transport requires energy but diffusion does not

it supports cell theory.it states that all living cells are made from cells

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.