Discuss the different layers of Earth’s interior with the help of a neat sketch.

Earth has a layered structure consisting of four main layers:

1. Crust:

   • The crust is the outermost layer of the Earth, and it is the thinnest layer relative to the other layers.
   • It is composed primarily of solid rock and minerals. There are two types of crust: continental crust and oceanic crust.
   • Continental crust is thicker (around 30-50 km) and less dense than oceanic crust. It consists mainly of granite and sedimentary rocks.
   • Oceanic crust is thinner (around 5-10 km) and denser than continental crust. It primarily consists of basaltic rocks.

2. Mantle:

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