Answer:
the early Earth must have been so hot it was like a liquid and heavier things sank to the middle.
Explanation:
The scientist believed that the earth has been one time or another became a liquid which now gives other things to become embedded in it , before solidifying again.
The differentiation of the earth, as described or explained by the scientists include
* Crust ...which is regarded as the outermost layer of the planet, comprising of variety of rocks. This include the oceanic and continental crusts.
* Core.... is known to be central part and the most important part of the earth.
* Mantle..... is considered as the largest part of the earth with about 85% of earth total volume.
