What does the line of red semicircles mean on a weather map? a warm front

a stationary front

a cold front

an occluded front

A stationary front.

A stationary front is represented by alternating blue and red lines with red semicircles pointing towards the colder air.

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the answer is: metamorphic rocks often show the presence of fossils, also a

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-lavira: )

1. is geographic distribution

2 is increasing complexity

3 is transitional forms