faster breathing rate
deep(er) breathing/big(ger) breaths (Ⓐ heavy/harder/gasping)
exercise/more energy needed/faster respiration
more/a lot of oxygen required/used
less oxygen (available)
more carbon dioxide/lactic acid (in blood)
difficulty in breathing
You die.
Mountain breezes happen at night, valley breezes happen during the day.
Mountain King happened in 1983.
Mountain of Faith happened in 2007.
Cursed Mountain happened in 2009.
The 29th May 1953 was the date when Mount Everest was climbed for the first time.
If they are unconscious and breathing, nothing will happen. If they are unconscious and not breathing, they will die.
There is carbon dioxide in the atmosphere. You have been breathing it in all your life.
Changes in breathing happen as a result of fluctuations in air quality, overall body condition, and direct control. These may occur slowly over time but will typically happen in a very short window.
Zoombinis Mountain Rescue happened in 2004.
Operation Mountain Fury happened in 2007.