Question

air not in use in climbing mountain​

Answer 1

Explanation:

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Mountaineering, often called alpinism when done in the Alps, is the set of activities that involves ascending mountains. Mountaineering-related activities include traditional outdoor climbing, skiing, and traversing via ferratas. Indoor climbing, sport climbing and bouldering are also considered mountaineering by some

Answer 2

Answer:

Their goal was to reach the summit of Everest without the use of supplemental oxygen canisters, a feat that remains rare today but was, in 1978, actually considered scientifically impossible. More than 4,000 people have climbed Mount Everest, but fewer than 200 have done so without oxygen.