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Earth is made up of four layers. At the center of the planet, it is the core which is as hot as the surface of the sun. It is made of metals, specifically iron and nickel. The outer core is liquid while the inner core is solid metal. Above this is the mantle which contains hot molten lava rock called magma. The crust (mhm, yummy crust!) where we live, is the thinnest layer and is made of rocks and soil.
For people who cannot wait.
1. Core
2. Sun
3. Iron & Nickel
4. Outer
5. Solid
6. Mantle
7. Magma
8. Crust
9. Rocks