Answer:
It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs.
Answer:
The rocky mountains
Explanation:
The Rocky mountains obstruct the settlers from moving west.
in mines that is where you find them
A tourist destination i think because many people around the world visit it and just go there. It is also a common known place.