Petersen, Christine

An introduction to geology that uses full-color photographs and easy-to-read text to describe the properties of different types of minerals.

An introduction to geology that uses full-color photographs and easy-to-read text to describe the main components of soil, soil horizons, and the importance of soil to nature; and includes instructions for a related activity.

An introduction to geology that uses full-color photographs and easy-to-read text to describe how ore and minerals are formed, their uses, and how ore mines function; and includes instructions for a related activity.

An introduction to geology that uses full-color photographs and easy-to-read text to describe what fossils are, how they form, and what they reveal about the past.

Shares some interesting facts about trees, explains how scientists group trees, and discusses how trees grow, and the purpose of leaves. Includes a glossary and resources for further research.

Looks at where food comes from, and describes the edible parts of various plants, including fruits, vegetables, spices, and grains.

Explains how plants make food to nourish themselves, and discusses the importance of sunlight to the process. Includes a glossary and resources for further research.

An introduction to flowers, examining their different parts, explaining how seeds are made, and looking at how animals, insects, and the wind help pollinate and spread flower seeds.

A close look at past and present invertebrates, including sponges, jellies, worms, mollusks, and arthropods.

A close look at past and present vertebrates, including fish, birds, amphibians, reptiles, and mammals.