Question

vapor

Accepted Answer

moisture in the air that can be seen; fog; mist
a. Scientists have devised* methods for trapping vapor in bottles so they can study its make-up.
b. He has gathered data* on the amount of vapor rising from the swamp.
c. A vapor trail is the visible* stream of moisture left by the engines of a jet flying at high altitudes.

Front	vapor
Back	moisture in the air that can be seen; fog; mist a. Scientists have devised* methods for trapping vapor in bottles so they can study its make-up. b. He has gathered data* on the amount of vapor rising from the swamp. c. A vapor trail is the visible* stream of moisture left by the engines of a jet flying at high altitudes.

Vapor Moisture Air Fog Mist Scientists Devised Methods