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This Concept Map, created with IHMC CmapTools, has information related to: The Earth's Four Systems (Geosphere), Four Layers are Crust, melted rock called magma, Four spheres are Lithosphere, Crust is the outer layer, Four Layers are Outer Core, Inner Core is 1220km thick, rocks are igneous, Lithosphere consists of Four Layers, Outer Core is 2250km thick, Four spheres are Hydroshpere, Four Layers are Mantle, rocks are metamorphic, Four spheres are Atmosphere, Lithosphere encompasses land, Biosphere encompasses Life, Outer Core contains liquid iron, Outer Core contains liquid nickle, Crust can be oceanic, Crust is 5km-50km thick, iron controls Earth's magnetic field