69 Mountaineers carry oxygen ……. with them while climbing on high mountains.
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Solution
Mountaineers carry oxygen cylinders with them while climbing high mountains.
Altitude increases as mountaineers climb high mountain peaks
As altitude rises, the amount of oxygen available decreases. Because trees are not available at high elevations, the amount of oxygen gas in the atmosphere decreases.
As a result, some regions of their bodies do not receive enough oxygen gas.
Dizziness and hypoxia are possible side effects.
Therefore, Mountaineers carry oxygen cylinders with them while climbing high mountains.