Geosphere: Considered the solid portions of the earth, including the hydrosphere and the lithosphere, as opposed to the atmosphere, which lies above it. At their conjunction is the biosphere.

 

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Geosphere: Considered the solid portions of the earth, including the hydrosphere and the lithosphere, as opposed to the atmosphere, which lies above it. At their conjunction is the biosphere.

Lithosphere: The solid, outer portion of the earth's crust coupled to the rigid upper mantle. Part of the geosphere.

Hydrosphere: Considered as the water portion of the earth's surface. Part of the geosphere.

Biosphere: The transition zone between the earth and the atmosphere within which most terrestrial life forms are found. It is considered the outer portion of the geosphere and the inner or lower portio . . . View Full Definition