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Consider the following air mass characteristics:
| 1. |
Cumuliform clouds. |
| 2. |
Stable lapse rate. |
| 3. |
Unstable lapse rate. |
| 4. |
Stratiform clouds and fog. |
| 5. |
Smooth air (above the friction level) and poor visibility. |
| 6. |
Turbulence up to about 10,000 feet and good visibility except in areas of precipitation. |
A moist air mass, which is colder than the surface over which it passes, frequently has which of the above characteristics?
| * | A) 1, 3, and 6. |
| | B) 3, 4, and 5. |
| | C) 2, 4, and 5. |
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