5. A proposed set of statements or principles used to explain a group of facts or natural phenomena is a law
question
set of data
conclusion
theory

theory

Explanation:

A proposed set of statements or principles used to explain a group of facts or natural phenomena is a theory.

the answer is c cumulus. cumulus clouds can be seen on a gray and rainy day, because cumulus clouds create thunderstorms. give me brainliest if right.

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.