How does density connect to the layers of the earth?

Our earth is structured around the densities of the materials which make it up. one property of density is that it determines the way materials in a mixture are sorted. this property of the matter results in the layering and structure of earth's atmosphere water crust and interior.

You need to divided twenty four by a dozen them by the temperature it is getting cook by

Exothermic,  physical change after it is already baked