Sylvia A Johnson

Describes different kinds of tree frogs and the way in which they live.

Discusses the growth and cultivation of apple trees and the development, harvesting, and storage of apples.

Describes the habits and life cycle of mantises, including the hatching of eggs, development of young, and final molt that produces adult insects.

Describes the life cycle of ladybugs, from egg through larva and pupa to adult, and explains how ladybugs aid humans by feeding on insect pests.

Describes the physical characteristics, habits, and natural environment of the elephant seals, so named because of their size and the proboscis that the males have on their noses.

Introduces the phenomenon of bird song, explains how and why birds sing, describes how scientists learn about bird communication, and indicates the dangers to songbirds due to changes in their habitats.

Describes the structure and purpose of leaves, the ways in which they change as part of the natural cycle of the seasons, and the process that creates their autumn colors.

Describes the social interaction of wolves in a pack as they share the work of hunting, maintaining territory, and raising young.