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What allowed scientists to confirm their theories that the Earth's interior had layers?

alexisangelique

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What allowed scientists to confirm their theories that the Earth's interior had layers?

What allowed scientists to confirm their theories that the Earth's interior had layers?
a. A large earthquake that occurred in Alaska
b. A system of 800 seismic stations placed worldwide
c. The correlation between intensity, frequency, and characteristics of waves
d. All of these choices

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Wilkinson

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alexisangelique Author

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Brilliant ツ

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