Where is the air pressure greater-at sea level or on a mountaintop? Explain.

Mountingtop! this is because at sea level, unless your under the water, the air is thicker and is easy to breath whist on a mounting top the air is thin leaving it harder to breath! that is why if you climb mount everest you cant stay long, usally five minutes, because the pressure is greater.

mountaintop i think because when you are on a mountain ur up higher