Assuming you are creating a book with 871 pages with a size of 8.5in. x 11in. how

The earths outer crust is made up of a series of tectonic plates that move over the surface of the planet, in areas where the plates come together volcanoes will form. Volcanoes can also form in the middle of a plate where magma rises upward until it erupts in the sea floor and is called a hot spot