The branch of earth science that focuses on objects beyond earth's atmosphere is
a. astronomy.
b. oceanography.
c. geology.
d. meteorology.

A.

Explanation:

because it studies the key word Astro which means astrophysics which is stars good luck

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.