What two spheres interact when a glacier erodes rocks?

When a glacier erodes rocks, the interaction occurs primarily between the geosphere and the hydrosphere. The geosphere consists of the Earth's solid components, including rocks and soil, while the hydrosphere includes all water bodies, including ice in the case of glaciers. As the glacier moves, it incorporates water from melting ice, facilitating the erosion of the underlying rock, thereby shaping the landscape.