soil erosion

Dirt?s not all that interesting?or is it? In truth, Earth?s soil is one of the major reasons life on the planet can exist! In this book, readers will learn that there?s far more to dirt and soil than the stuff you get on your sneakers or sweep off your front steps. Illustrations will show more about soil?s origins and makeup, as well as the nutrients it provides for growing things. Projects and activities allow young geologists to put what they?re learning into practice and get their hands dirty as they investigate the world beneath our feet.

Describes soil degradation from erosion, contamination, and intensive agriculture; presents diagrams of soil structure; and discusses sustainable agriculture, the efforts of national governments to protect soil, and future needs for soil protection.

Discusses how the contamination, depletion, and erosion of soil affects the food supply.

Discusses the nature, uses, and importance of soil and the many forms of life that it supports.

Describes rivers, lake basins, divides, both natural and man made and the effect of soil erosion.

Explains the value of soil, how soil is created, and the forces that cause soil erosion. Discusses the impact of soil erosion on humans and wildlife, and offers tips for caring for the earth. Includes color photographs, fact boxes, a glossary, and sources of additional information.

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.

Discusses how the contamination, depletion, and erosion of soil affects the food supply.

Presents experiments that explore the properties and erosion of soil, recycling, and organic waste.

Discusses the erosion and pollution of soil, the harmful effects of these processes, and ways of preventing them.