When sedimentary rock go to the bottom of a seafloor it sticks together over time and turns into metamorphic rock. Then metamorphic rock melts and when it cools down it turns into igneous rock. This process happen over and over and its called rock cycle.
I would look at the key on the map
Claudia most likely didn't have a mental map established for her new school yet.
Earthquakes are concentrated along where there is usually large faults of concentration.
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