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earth science 1
Term | Definition |
---|---|
atmosphere | the gaseous layer of a planet usually retained by its gravity |
biosphere | the system of Earth by which living organisms exist |
cryosphere | the frozen water or ice system of a planet |
differentiation | a process creating different layered compositions of a planet |
hydrosphere | the water system of the earth; includes solid, gas, and liquid water |
lithosphere | the rigid, crustal layer of earth |