Secondary air pollutants are formed by
A) the evaporation of solvents and gasoline.
B) the incomplete combustion of fuels.
C) primary pollutants reacting with other compounds in the atmosphere.
D) radioactive substances such as radon reacting with primary pollutants.
C
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Lake-effect snowfall:
A) is most common in late winter. B) requires that the lake be relatively warm. C) extends for up to 100 miles south of the lake. D) requires the presence of stable air.
A halo around the Sun or Moon indicates that this cloud type is present
A) altostratus B) cirrus C) cumulonimbus D) cirrostratus
Which letter in the figure above corresponds to a "syncline"?
What will be an ideal response?
Which of the following drives deep-water circulation?
A) The sinking of cold, high-salinity, surface waters at high latitudes B) The sinking of cold, high-salinity, surface waters at low latitudes C) The sinking of warm, high-salinity, surface waters at high latitudes D) The sinking of warm, high-salinity, surface waters at low latitudes E) The sinking of warm, low-salinity, surface waters at low latitudes