the air pressure changes based on elevation
If you mean by air pressure, High air pressure is how much air there is upon you. IF you were on the death valley, you would have lots of air pressure. If you were on a mountain, there would be little air pressure. If there is high pressure, there is good weather If you mean the other pressure, then it is this. If there is a lot of pressure, then you are intimidated, and there is lots of people looking at you. Visa Versa for low pressure.
At the bottom of the valley!
i think a valley does because when you climb a mountain the air pressure decreases the higher you go.
death valley
they form by the air pressure around the valley increasing and then being slowly released to make room for new air
Yes there is. Not everyplace, but some.
The air pressure must be higher in a valley below "sea level". The air mass above this point is more than at sea level.
This depends on the altitude of this valley; generally is higher.
I would expect it to be lower.
A mountain because the higher in air you go the more higher air pressure gets. this is not part of the anwser but, G-force is pressure on arollar coaster when u get higher.
DEATH valley DEATH valley DEATH valley DEATH valley DEATH valley :):):):):P