GEOLOGY

Detailed explanation-1: -These four subsystems are called “spheres.” Specifically, they are the “lithosphere” (land), “hydrosphere” (water), “biosphere” (living things), and “atmosphere” (air). Each of these four spheres can be further divided into sub-spheres.

Detailed explanation-2: -Detailed Solution. The names of the four spheres are derived from the Greek words for stone (litho), air or vapor (atmo), water (hydro), and life (bio). Ozonosphere is a part of atmosphere. That’s why it is not a sphere of the earth.

Detailed explanation-3: -Thus Photosphere is not a layer of atmosphere.

Detailed explanation-4: -The four spheres are the geosphere (all the rock on Earth), hydrosphere (all the water on Earth), atmosphere (all the gases surrounding Earth), and biosphere (all the living things on Earth).