Final answer:
Positive pressure refers to higher levels of local air pressure, while negative pressure refers to decreased levels.
Atmospheric pressure decreases with altitude, resulting in reduced oxygen concentration and can cause hypoxia at high altitudes.
Step-by-step explanation:
Positive pressure refers to higher levels of local air pressure, while negative pressure refers to decreased levels.
Atmospheric pressure is the force exerted by gases in the atmosphere and it changes with altitude.
As altitude increases, the air pressure decreases, resulting in reduced oxygen concentration. This can lead to hypoxia at high altitudes.
Positive pressure refers to higher levels of local air pressure, while negative pressure refers to decreased levels.