|Cumulus and stratus clouds are located at ____ altitudes.
|Warm air ____ because it is less dense than cold air.
|The ____ tend to flow west to east 7 miles above the U.S.
|Standard atmospheric pressure is 29.9 ____ of mercury.
|A dew point below 32° F is called a ____ point.
|The ____ climate zones are between the polar and tropical zones.
|The dew point is never ____ than the current temperature.
|Cold fronts are more likely to produce ____ than warm fronts.