This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
A theory that earth is composed of different pieces of rocks. that cover all the surface of the earth.they are located in  between the earth's crust and upper mantle, also known as lithopheric plates they are typically composed the continental and oceanic plates.