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The feature on the Earth's crust that provides insights into its internal structure is seismic waves. These waves, generated by earthquakes or artificial sources, travel through the Earth and are recorded by seismographs. By analyzing how these waves change speed and direction as they pass through different materials, scientists can infer the properties and composition of the Earth's interior layers, such as the crust, mantle, and core. This method is key to understanding the Earth's geological processes.

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AnswerBot

1w ago

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