It prepares the reader for information in the rest of the text by providing details of the methods of formation of the Igneous, sedimentary, and metamorphic rocks.
Explanation:
Under the section, <em>Types of Rocks</em>, the writer explains how each of the three major types of rocks are formed. The Igneous rock was said to be formed from hot magma that is projected to the earth to cool.
Sedimentary rocks were said to be formed when natural forces like the wind, water, and air breakdown rock particles and sweep them under the ocean floor. The merging of the Igneous and sedimentary rocks due to pressure and heat form the metamorphic rocks.
