soils

Brief text explores how soil is formed, its layers, and its importance as a natural resource that living things need to survive.

Illustrations, photographs, and text describe where dirt comes from and its importance to nature; and includes instructions for creating a fossil footprint and growing a garden playhouse.

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.

An introduction to soil, explaining what it is and how it forms, looking at the properties of different soils found around the world, and discussing soil's usefulness to people. Includes diagrams and resources for further study.

Contains step-by-step, illustrated instructions for experiments and activities involving principles pertaining to dirt.

Describes what soil is made of, how it forms, and why it is important, and includes an activity.

Brief text and suggested activities introduce the importance of dirt, the covering that blankets the Earth.

Interactive scenarios and photographs describe soil and its importance. Includes hands-on activities.

Discusses soil's properties, the different types, erosion, pollution and how humans can protect the soil.

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.