Question

why mountaineers need oxygen cylinder to climb up the mountain ​

Answer 1

Explanation:

Mountaineers carry an oxygen cylinder along with them. It is because when they climb mountains, as altitude increases, the amount of oxygen level in the atmospheric air decreases as trees are not found at higher altitudes. As a result, mountaineers suffer from dizziness. It can also lead to hypoxia.

Answer 2

Answer:

Climbers use supplemental oxygen to give them an edge while pushing to the summit of a mountain like Everest at 8850 meters. At that altitude, the available oxygen is 33% of that at sea level. ... Providing supplemental oxygen at 8000 meters in high winds and extreme temperatures is not simple.