Answer:
Because it is inevitable and no one truly knows what to expect from it.
The relflex arc is basically a connection of nerves in your nervous system that doesnt pass through the brain.
I do believe that it is C cause some plants grow in certain areas
So the important factors are air pressure, temperature, and humidity. The base it is normal and easy to breathe. As you go towards the summit the temperature drops, air density and pressure is low; air is thin, and the humidity is also low. This results in hyperventilation as the air pressure is low. Also there is a chance of getting Hypoxia. The environment is harsh.
