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Elza [17]
4 years ago
7

Why do Scientist use data from an earthquake to learn about Earth's layers

History
1 answer:
murzikaleks [220]4 years ago
8 0

The seismic waves are reflected (bounced off) layers of different density, and they are refracted (bent) when they enter layers of different density.


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In the 1850s they defended slavery in the United States, and promoted its expansion into the West against northern Free Soil opposition. The United States presidential election of 1860 formalized the split in the Democratic Party and brought about the American Civil War
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