Air

Air is a name for the mixture of gases present in the Earths atmosphere. Also, generically, that which is inhaled during breathing.

Composition of the air changes at different altitudes and preassure?s, and this is the reason for aircraft to have preassurized cabins.

Compressed air is often used in scuba diving, when diving fairly close to the surface.

Air is one of the classical elements, and is associated with many other concepts, such as the sword suit in the tarot.