GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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There is less oxygen in the air at great heights
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There is little nitrogen in the air at great heights
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There is a hole in the ozone layer
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There is no air at the top of very high mountains
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Detailed explanation-1: -Mountaineers carry oxygen cylinders while going to high mountain peaks because altitude increases as they climb the mountain. The amount of oxygen decreases as the altitude increases. The reason for the decrease in the amount of oxygen gas is because trees are not found in high altitudes.
Detailed explanation-2: -Why does a mountain climber need an oxygen supply at very high atitudes, even though the air still contains 21% oxygen? A mountain climber needs oxygen supply at very high altitudes because the temperature and air pressure is lower than they are at sea level.
Detailed explanation-3: -At high altitudes, Earth’s atmosphere is much thinner than it is at sea level. Mountain climbers trying to reach the highest peaks have to overcome a lack of oxygen.