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Meteorologymedium#144

The typical cloud sequence ahead of an approaching warm front is:

A

Cu, Cb, Ns, St

B

Ci, Cs, As, Ns, St

Correct
C

Sc, St, Ci, Cc

D

Cb, Ac, Ci, Cc

Explanation

Ahead of a warm front, clouds appear in the sequence Cirrus, Cirrostratus, Altostratus, Nimbostratus, and Stratus as the front approaches.

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