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.
"The development of civilization hinged on the ability of mankind to turn soil into useful tools and beautiful objects. Students can learn about the history of tool-making technology, from the cooking utensils of the ancients to the multipurpose ceramics of today. They can also learn how different peoples created works of art from the earth that helped define their cultures"--Provided by publisher.
"Soil covers most of the land on Earth. It feeds plants and is home to many animals. Discover why soil is an important part of nature!"--Provided by publisher.
Describes the cycle of soil decomposition and the water cycle, as well as how to develop a compost pile for recycling pea pods and other garden products into compost to feed a garden.