soil ecology

Describes what soil is made of, different kinds of soil, and how things live and grow in soil. Presented in English and Spanish.

Provides information about soil, looking at the different layers of Earth, discussing soil formation, identifying various types of soil, and explaining what makes soil healthy.

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

Text and photographs introduce the science of soil, from the different types, to where they can be found.

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

Provides information about soil, describing its different layers, colors, and textures and explaining how it forms and how to take care of it.

Introduces the components of soil, patterns of change, and erosion.

Briefly describes the composition of different types of soil, the variety of plants and animals that live in it, and the necessity of soil to human life.

Offers a natural history of the subterranean world, profiling the different species who live there and the scientists who research them.