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There are two layers in the crust.
Inner and outer crust
Continental and oceanic crust
Surface and oceanic crust
Mantle and Core
The crust is the outermost layer of the earth’s surface. It exists in a solid state. It is classified into two layers based on chemical composition. The continental crust is made up of silica and aluminium, whereas, the oceanic crust is made up of silica and magnesium.