Answer:
when it gets high pressure
Hills are easier to climb than mountains. They are less steep and not as high. But, like a mountain, a hill will usually have an obvious summit, which is its highest point. According to the U.S. Geological Survey, there is no official difference between hills and mountains.
Answer:
2
Explanation:
3 is physical 4 is as well so it has to be 1 or 2
