Which component of Earth and its environment does not play a role in the carbon cycle?

The lithosphere, specifically the Earth's crust, plays a minimal role in the carbon cycle compared to other components like the atmosphere, hydrosphere, and biOSphere. While it contains carbon in the form of fossil fuels and carbonate minerals, the primary processes of carbon cycling occur in the atmosphere and oceans, as well as through biological activities. Thus, while the lithosphere can store carbon, it does not actively participate in the dynamic exchanges that characterize the carbon cycle.