Question

mountaneer's are advised not to go to high altitutes without a supplimentry supply of oxygen.why?​

Answer 1

Explanation:

High-altitude climbing (mountaineering) usually requires the use of portable oxygen apparatus when climbing Mount Everest or the other eight-thousanders, though some mountaineers have ascended Everest without oxygen. The apparatus can be open-circuit (supplementary) or closed-circuit; the 1953 British Mount Everest expedition used both types. The Death zone altitude is 26,000 feet (7,900 m) or above.

Answer 2

Answer:

The air that we breathe remains the same composition, however its density decreases ie the amount that we breathe in with each breath gets lesser with altitude. That is why there is a need to carry supplementary oxygen in the high altitude zone.