hills
A hill? A plateau? A ridge?
a hill
Mountain.
Forest in central Arizona boasts of eight wilderness areas that total more than 590,000 acres.
hills
A hill? A plateau? A ridge?
a hill
Hill
Mountain.
yes that is why they are called plains like the high flying object
A mountain is something that is higher than the rest of the land. You can't be "higher than the rest of the land" unless there is lower land to be higher than. If there were no space between mountains, then all land would be at the altitude of the top of the mountains, and it would all be flat, and there would be no mountains.
Butte, mesa, promontory, hill, ridge, and so forth.
Because the air pressure is lower, and the boiling point of water (and other liquids) decreases as the pressure decreases.
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A plateau is lower than a plain. <(._.<) (>._.)>
Higher than what? As you go up a mountain the air pressure gets lower simply because there is less air above you weighing down on you.