How does the Geosphere regulate atmospheric $ ext{CO}_2$ levels over geological timescales?

Answer

Through processes like the weathering of silicate rocks and subduction zones.

Plate tectonics, driven by mantle heat convection, facilitates the long-term recycling of carbon via rock weathering and subduction, preventing the atmosphere from accumulating excessive $ ext{CO}_2$.

How does the Geosphere regulate atmospheric $	ext{CO}_2$ levels over geological timescales?
Earthenvironmentsupportsystemlife