How are mountains and plateaus alike?

Mountains can form by volcanic activity, but most often result from collisions within the Earth's crust. ... The low areas with rivers are thus your valleys, the higher uneroded peaks, your mountains. Plateaus are high places, usually uplifted (but not always), that are flat.

Explanation:

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.