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Explain the theory of plate tectonics and how they changed Earth's surface over time. Include the role of plate tectonics

User Shiva Garg
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The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.

User Cagcowboy
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