The earth's surface is constantly changing. Over time, erosion causes rocks to break and wear away. Earthquakes often happen quickly and without warning. Wheather fast or slow, natural forces occur and cause changes to Earth's surface. Volcanic ash, for example, can create fertile fields. Earthquakes can form mountains.

All 3 books to be used as a set. Title from container.

The changing earth / Nisha Da Silva -- Volcanoes / Monica Halpern -- Slow changes on earth / Nicolas Brasch.