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What geological processes contribute to the formation of the Earth's tectonic plates, and how do these plates affect the planet's surface and ecosystems over time?

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What geological processes contribute to the formation of the Earth's tectonic plates, and how do these plates affect the planet's surface and ecosystems over time?
What geological processes contribute to the formation of the Earth's tectonic plates, and how do these plates affect the planet's surface and ecosystems over time?

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