Answer :

If not for the rigid lithosphere and brittle asthenosphere, the earth would not have plate tectonics and would be entirely submerged in water.

The asthenosphere, a part of the Earth's mantle beneath the lithosphere, is assumed to be substantially hotter and more fluid than the lithosphere. The asthenosphere is located between 100 km (60 miles) and 700 km (450 miles) beneath the Earth's surface. transverse section of a tectonic plate.

Since the lithosphere is determined by how Earth's constituents behave, it includes the crust and uppermost mantle, both of which are fragile. The lithosphere is strong and brittle, which causes it to break under stress. We experience earthquakes as feeling like this.

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