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I would like to know if the layers of the earth have changed over time?
Question Date: 2013-03-06
Answer 1:

Yes, the interior of the Earth is in constant motion. The speed at which hot rock flows around like a viscous fluid is about 1 inch per year.

Answer 2:

Geologic forces on Earth are constantly adding new layers of rock, as old rocks are eroded away and new volcanoes erupt new lavas.

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