What causes sinkholes to form? Can scientists predict where they might appear? What are some of the biggest sinkholes in the world? Find the answers to these questions and more in this enhanced media book.
Describes how rocks are made, discusses how they are used, and provides facts about soil, metals, gems, fossils, and fossil fuels, and includes activities and a glossary.
Introduces children to the key role soil plays in the environment and life cycles, describing the nutrients and insects found in soil, the different types of soil, and its many attributes.
Discusses the important role soil plays in environmental health, describes the impact of erosion and contamination, and explores how countries are dealing with the issue of land degradation.