What would make a mountain top become flatter and smoother over time? What is this process called?

reclamation

Explanation:

claiming something back or of reasserting a right.

Erosion

A mesa is a flat-topped mountain or hill, they are formed by erosion, when water washes smaller and softer types of rocks away from the top of a hill. The strong, durable rock that remains on top of a mesa is called caprock. A mesa is usually wider than it is tall and are usually found in dry regions where rock layers are horizontal

on the planet jupiter, the acceleration due to gravity is approximately 26 m s2 , roughly 2.7 times the acceleration due

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.