How does plate tectonics function as a planetary thermostat over geological timescales?

Answer

Via the carbonate-silicate cycle

Plate tectonics drives the carbonate-silicate cycle, a long-term feedback loop involving the weathering of silicate rocks and subsequent volcanic release of $ ext{CO}_2$, which stabilizes the climate.

How does plate tectonics function as a planetary thermostat over geological timescales?

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Planet Earth - What Makes It Habitable? - YouTube

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