Multiple Choice
The earliest explanation for occluded fronts held that they formed when
A) a cold front overtakes a warm front.
B) two warm fronts meet while traveling in different directions.
C) a circular region of low pressure at the junction of a cold front and a warm front changed shape.
D) cold air aloft undercut warm air near the surface.
Correct Answer:

Verified
Correct Answer:
Verified
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