A sylphon cell is a part of a（）.

A.that blows towards the sea at night
B.that blows towards an island during the day
C.caused by cold air descending a coastal incline
D.caused by the distant approach of a hurricane

A.humidity
B.precipitation
C.pressure
D.temperature

A.charted record of atmospheric temperature over time
B.charted record of atmospheric pressure over time
C.graphic record of combustible gases measured in an atmosphere
D.graphic record of vapor pressure from a flammable/combustible liquid