World of knowledge

An introduction to insects, with information on appearance, habitats, physical characteristics and behavior.

Introduces a variety of living animals, including mammals, birds, reptiles, amphibians, fishes, arthropods, and other invertebrates, and discusses their relationships with plants and with man.

Text, illustrations, and reference sections provide an account of the earth's plant life, ranging from single-celled algae to the giant redwoods.