The core,mantle,and crust of a planet are defined by differences in their

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The core, mantle, and crust are defined by differences in their composition. The core is made up of mostly iron and nickel, the mantle is made up of silicate rock, and the crust is the outermost layer made up of various types of rocks including granite and basalt. The other options do not accurately describe the differences between the layers of a planet.

The Core,mantle,and Crust of a Planet Are Defined by Differences