Rewrite this sentence: “As an organism develops, its cells take on different structures by expressing different combinations of genes.”

As organisms develop, it’s cells take on different forms by expressing different combinations of it’s genes.

Explanation:

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.