Presents information on the structure and function of various kinds of cells found in humans and other organisms.

Describes the various characteristics of plant and animal cells, what is inside them, how they reproduce, cloning and gene technology, bacteria and viruses, and protection against disease.

Text, illustrations, and photographs describe the structure and functions of plant cells.

Presents a short study of cells, how they work together to help the body to breathe, digest food, and heal injuries.

Describes how certain organisms adapt to their environment, ways to protect the environment, genetic engineering, and biotechnology.

Explores how organisms adapt to changing environments, from changes in physical appearance to adaptations in behavior, and examines the evolution of different plant and animal species.

Text and color photos and illustrations introduce the organisms that can live in the human mouth, intestines, skin, hair, and blood.

Discusses the microscopic organisms known as phytoplankton and the important functions they serve in replenishing earth's atmosphere, in the marine food chain, and more.

A discussion of bacteria, one of the six major classifications of living organisms, examining the biology of bacteria, and describing rod-shaped, round, curved, and mycobacteria varieties.

Photographs and simple text written in both English and Spanish explain how food chains link small organisms to large animals; and describes a polar food web, which connects two food chains and animals such as fish, seals, and whales.

Provides coverage of taxonomy, anatomy, behavior, habitat, and survival techniques focusing on relatives, prey, predators, and neighbors. Expands the readers' awareness of species differentiation, interrelations, and environmental response for mammals of the northern hemisphere. [electronic resource]

Provides coverage of taxonomy, anatomy, behavior, habitat, and survival techniques focusing on relatives, prey, predators, and neighbors. Expands the readers' awareness of species differentiation, interrelations, and environmental response for mammals of the southern hemisphere. [electronic resource]