Explanation: The LITHOSPHERE can be defined as the rigid, mechanically strong, outer layer of the Earth; divided into twelve major plates. On Earth, it is composed of the crust and the portion of the upper mantle. The lithosphere is about 100km thick. The lithosphere remains rigid for very long periods of geologic time.
Lithosphere is the last and upper covering of the planet earth. <em>And yes it is been characterized by </em><u><em>rocks which are hard and even the rocks also break</em></u><em>. </em>
Lithosphere is made from a covering which is coolest that is hardened and rigid from the outer-covering. It is also known as a rocky layer. It consist of a non-regular surfaces as well.
