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Earth's Spheres
| Term | Definition |
|---|---|
| Earth's systems | the planet on which we live |
| Atmosphere | the mixture of gases that sorrounds the earth |
| geosphere | the solid portion of the earth (distinguished from atmosphere, hydrosphere ). |
| hydrosphere | the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere. |
| cryosphere | All those areas of the Earth where the surface is frozen |
| biosphere | the part of the world in which life can exist |
| lithosphere | the solid part of a celestial body (as the earth) |