Rock+cycle

=**Rocks cycle**= Sedimentary rock is a types of rock. Sedimentary rocks make up about three quarters of the rocks at the Earth's surface. They form at the surface in environments such as beaches, rivers, the ocean, and anywhere that sand, mud, and other types of sedimentary rocks preserve a rercord of environments that existed when they formed.By looking at sedimentary rocks of different ages, scientists can figure out how climate and environments have changed through Earth’s history.