Why are all air masses labeled either "polar," "arctic" or "tropical"? 
A) because heat exchanges occur only in the low and high latitudes
B) because energy exchanges occur only in the high latitudes
C) because heat and energy exchanges occur only in the low and high latitudes
D) because air masses don't form in the middle latitudes
Correct Answer:
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Q25: Which of the following air masses has
Q26: Which of the following air masses are
Q27: List the sources of maritime air masses
Q28: Why don't continental polar air masses form
Q29: _ air masses develop over warm ocean
Q31: The arctic front
A)is relatively shallow.
B)produces substantial amounts
Q32: The coldest air mass is
A)maritime polar.
B)continental tropical.
C)maritime
Q33: This figure illustrates the southward movement of
Q34: Why is mountainous terrain a poor source
Q35: List two main characteristics of air mass
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