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#mantle convection #geology #plate tectonics #earth science #heat transfer #geothermal #core heat #rock cycle

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#fire element #solar #volcanic #lava #natural power #heat source #core heat

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#hearthstone #smoldering warmth #lasting feeling #core heat #wood ember heart #gentle fire

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#scorching underground #underworld heat #core heat #geothermal vents

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#metallic core #hot core #earth's center #planetary geology #core heat #core pressure #iron core