Question

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Answer 1

Answer:

Atmospheric pressure normally decreases with increasing altitude. Atmospheric pressure is the force experienced at a point on a surface by the weight of the air column above that point. Hence, as we climb to higher altitudes the amount of air decreases. And this lack of enough oxygen may cause suffocation to mountaineers when they reach high altitudes. So as a precaution mountaineers usually carry oxygen cylinders with them.

                                                      OR

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. Hypoxia is a condition wherein a region of the body is deprived of sufficient supply of oxygen at the tissue level. Hence, to avoid such issues arising due to insufficient oxygen, mountaineers carry oxygen cylinders.

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