Clouds are particles of water or ice suspended in the air.
Cirrus clouds are lacy or wispy clouds that form at high altitudes, generally before a change in the weather.
Cumulus clouds are large, white, puffy clouds that generally appear during fair weather, although they also form thunderheads on hot days. Some carry rain.
Nimbus clouds are the dark clouds characteristic of storms.
Stratus clouds are low clouds that stretch over large portions of sky, creating overcast conditions.
Cloud seeding is a technique for producing rain by dropping chemicals or small objects into clouds.
Chickens were domesticated before cats.