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The different layers of [[Earth]] are made of different materials.
*[[Crust]] - The most common chemical elements in the [[Crust]] are [[Oxygen]] (46.6%), [[Silicon]] (27.7%), [[Aluminum]] (8.1%), [[Iron]] (5.0%), [[Calcium]] (3.6%).
*[[Mantle]] - The [[Mantle]] is mostly made of [[Silicate]] [[rock]]s.
*[[Outer Core]] - The [[Outer Core]] is mostly made of [[liquid]] [[Iron]] and [[Nickle]].
*[[Inner Core]] - The [[Inner Core]] is mostly made of [[solid]] [[Iron]] and [[Nickle]].