Question

one of the reason why it is difficult to climb at high altitude is that​

Answer 1

Answer:

when you're mountain climbing, hiking, driving, or doing any other activity at a high altitude, your body may not get enough oxygen. The lack of oxygen can cause altitude sickness. Altitude sickness generally occurs at altitudes of 8,000 feet and above. People who aren't accustomed to these heights are most vulnerable.

Explanation:

thank you

Answer 2

mountain is the altitude