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The Earth's crust is the outermost layer of the Earth. The mantle is the next layer and is made of the Earth's hot rock. The core is the innermost layer and is made of the Earth's molten rock. The mantle and core are combined to make the Earth's mantle. The lithosphere is the outermost layer and is made of the Earth's solid rock. The lithosphere is combined with the mantle to make the Earth's crust. The mantle and crust are combined to make the Earth's mantle. The Earth's mantle and crust are combined to make the Earth's surface.