Which term describes body structures in different organisms that have different outward appearances but develop from the same embryonic tissues?

because of

the correct answer is:

a population changes in response to a change in the environment.

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.