When upper- air flow produces large- amplitude troughs and a general _________flow, cold air moves southward and cyclonic activity dominates the weather. (Assume Northern Hemisphere.)
A) West to East
B) West to South
C) North to East
D) North to South

Question

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The Answer of When upper- air flow produces large- amplitude troughs and a general _________flow, cold air moves southward and cyclonic activity dominates the weather. (Assume Northern Hemisphere.)
A) West to East
B) West to South
C) North to East
D) North to South

When Upper- Air Flow Produces Large- Amplitude Troughs and a General