Explain how advancements in engineering and technology over the years have allowed scientist to learn about mars and earths moon.

wha is what i will use to get my free points

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.

i think its both a and b