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What does the line if blue triangles mean on a weather map

What does the line if blue triangles mean on a weather map-example-1
User Daniel Wu
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2 Answers

3 votes
the correct answer is b a cold front it represents a cold front advancing in the direction of the blue triangle as cooler air displaces warmer air is upwards
User Jeff Bramwell
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4 votes
a cold front i believe because red is a warm front

User Fahad Sarfraz
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