Stewart, Melissa

Describes how a bone becomes a fossil by explaining how one form of water mineral replaced bone minerals. Millions of logs became fossils after their wood was also replaced by minerals. Some ancient trees oozed a stick liquid called resin and when it hardened it became known as amber which is used for jewelry now.

Focuses on pinnipeds, such as different types of seals and walruses, with emphasis on their traits and behaviors.

Photographs and simple text explore how the human eye sees color.

Provides comprehensive information on bats and the process of how they use their sensory system to find their way in the dark.

Presents basic information on sloths.

Briefly describes plant structures, photosynthesis, and life cycles and discusses the importance of plants to animals and humans.

Explains the scientific concept of motion, discusses the discovery of the laws of motion, and includes a glossary.

Presents a look at fossils, explains where and how they form, and discusses the types of information that can be learned from them. Includes a glossary.

Describes atoms including the historical background of scientists' views of these particles.