Multiple Choice
What causes a cold front?
A) The front of an advancing storm is abnormally cold.
B) A cold air mass moves up against the Rocky Mountain Front.
C) A cold air mass moves in under a warm air mass.
D) A warm air mass moves in over a cold air mass.
E) The jet stream moves north into central Canada.
Correct Answer:

Verified
Correct Answer:
Verified
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