Because of high altitude sickness which is affected by climbing up high were there is high altitude. High altitude is were there is to much oxygen up high, if you breech in to much oxygen you could faint.
Oxygen density decreases as altitude increases. This is due to the decrease in atmospheric pressure at higher altitudes, which results in a lower concentration of oxygen molecules. Therefore, the higher the altitude, the lower the oxygen density.
It depends on the grade
High altitude places, such as mountainous regions, can affect individuals differently due to lower oxygen levels. It can lead to symptoms like shortness of breath, headache, and fatigue, known as altitude sickness. People may need time to acclimatize to the higher altitude to adjust to the decreased oxygen levels.
Altitude sickness can be treated with oxygen therapy
No mountains in the UK are tall enough for the air at the summit to be appreciably thinner. The only people who'd need bottled air on the summit are those who'd need it anyway, at any altitude!
Lydia Bradey from New Zealand in 1988 was the first woman to climb Mount Everest without bottled oxygen
Alison Hargreaves. On 13 May 1995 she reached the summit of Everest without the aid of Sherpas or bottled oxygen.
No, fish cannot survive in bottled water because it lacks the necessary oxygen and nutrients for them to live.
makes 40% oxygen than lower altitude
The oxygen that is dissolved in the water.
Some people believe using bottled oxygen while climbing Mount Everest or any other high mountain is cheating.