The air is different as you progress bigger and better in to the atmosphere. The air receives "thinner" as elevation climbs because there are much less air molecules up there. Mountain climbers generally really need to use canisters of oxygen because they climb over three,800 meters (twelve,500 feet) because there https://www.dailypioneer.com/2025/page1/smoke-smell--unruly-passenger-affects-ai-flight-service.html