humidity
The arrow opposite the direction of travel is the air resistance or drag.
Oxygen represents about 21% of Earth's atmosphere.
usually it represents the the air presure
The tip of the wave.
the theme song for "Fresh Prince of Bel-Air"
the ability to create a air force
a) the straight graph
vital capacity
vital capacity
Hertz.
it represents the army, air force, navy, coast guard, department of defense.