Explain the rock cycle in 2-4 sentences

The rock cycle starts with one huge rock or magma, then the rock gets weathered and either becomes soft or it can become rough. "But does the rock stay that way?" and the answer is no. Over time the rock becomes weathered enough that it can't be weathered any more and that is because it is now sand.

Explanation:

easy

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.