Answer :
The entirety of land on the planet, encompassing both the surface above and below water, along with the Earth's core, mantle, and crust, is collectively referred to as the **geosphere**.
The geosphere includes all the solid parts of the Earth, from the molten iron core at the center to the outermost layer of the crust. This term is used in Earth sciences to describe the solid components of the Earth as a system interacting with the atmosphere, hydrosphere (water), and biosphere (living organisms).
