The internal structure of the Earth, divided by chemical composition. Geologist break the internal structure of the Earth, 3 based on the chemical elements. The Earth's crust (the Crust) is a skin on the outer world composition is mostly silicon dioxide and aluminium oxide. Mantle (Mantle) is the section, which is located beneath the Earth's crust, down to a depth of 2,900 km are main elements as Silicon oxide, iron oxide and magnesium oxide. The pith (Core) is located in the center of the world. The main elements are iron and nickel.
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