3. what are the layers of the earth? how do they differ from one another? how was the early earth able to develop a layered structure?

There are four layers of the Earth, including Inner Core, Outer Core, mantle, and Crust. Each layer has its characteristics because of its temperature and formation.

The inner core is solid with iron and other metal deposit in it. The outer core is liquid, while the mantle is composed of silicate rocks. The crust is the outer layer of the earth, consist of different types of rocks.

The earth was able to develop a layer structure because of the climatic change it had millions of years ago, where the hardest metal reached to its core.

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