Why are geological processes like plate tectonics considered vital for long-term habitability, even for a planet perfectly situated in the HZ?

Answer

It acts as a global thermostat by cycling carbon dioxide between the atmosphere and interior.

Plate tectonics helps maintain long-term climate stability by cycling carbon dioxide through volcanism and subduction, preventing global temperatures from plummeting if the gas were permanently locked in rocks.

Why are geological processes like plate tectonics considered vital for long-term habitability, even for a planet perfectly situated in the HZ?

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What Is the Habitable Zone? - YouTube

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