Mountaineers carry oxygen cylinders with them on high altitude mountains like Mount Everest. This is because the higher the mountaineer climbs the less air there is to breathe.
When you travel in an aeroplane at a high altitude the plane will be pressurized. A cabin air pressure at cruising altitude is lower than air pressure at sea level. At typical cruising altitudes in the range 11 000-12 200 m (36 000-40 000 feet), air pressure in the cabin is equivalent to the outside air pressure at 1800-2400 m (6000-8000 feet) above sea level.
the air becomes rarefied and has a very low oxygen
Because they find themselves in environments of little or no oxygen, and oxygen is essential to life.
Because at great heights ie up mountains the air becomes 'thinner' this means there is less oxygen and so it is harder to breathe. So they carry the oxygen so that they can continue up the mountain otherwise they will be unable to coninue because it is dangerous.
They have to carry oxygen cylinders with them as it allows them to breath at high altitude. The temperature also decreases as we go higher and higher.
It is because at high altitudes the oxygen is not sufficient..........
At extreme altitudes, the air becomes rarefied and has a very low oxygen concentration. This can lead to a condition known as hypoxia, which is deprivation of oxygen to the brain, which can cause loss of consciousness, paralysis, and death.
A climber carries an oxygen cylinder on their back because it helps him/her to breathe easier. On high altitude mountains like Mount Everest the air is so thin it makes it very hard for anyone to breathe without extra oxygen from a cylinder.
The higher you go up away from the Earth's surface, the less oxygen can be found in the air and more of gases we don't need to breathe in. So, as the mountaineer goes higher up, breathing becomes harder and your body works slowly, reducing reaction times. By carrying an oxygen tank, the mountaineer can always be breathing the perfect concentration of oxygen they need at all times.
I dont know, not while I've been alive
because the higher you go up a mountains are the less oxygen there is.
You can buy oxygen cylinders online at http://www.trishir.com/products-details.asp?POID=251 They offer many cylinders of small,medium portable cylinders You can buy small oxygen cylinders at www.oxygenmobility.com For more details call 800-716-6674.
Mountaineers condition themselves by expanding their lungs. They carry oxygen on climbs to altitudes where it will be needed.