Kalman, Bobbie

"Looks at the positive, negative, and neutral effects that result when different kinds of animals interact with each other. Symbiotic relationships highlighted include birds and fish that clean parasites off other animals, bacteria that help keep animals and people healthy, mosquitoes that pass diseases such as malaria, predators that hunt prey, and scavengers that help clean the earth. Other examples of symbiotic relationships include several kinds of animals. Students are asked to illustrate symbiosis in human relationships that are similar to those found in nature."--Provided by publisher.

"Foxes, rabbits, mongooses, rats, starlings, turtles, Burmese pythons, and Asian carp are just a few of the invasive animals introduced by people into countries and ecosystems to which they do not belong. This important book describes how these animals are destroying habitats and endangering the lives of native animals, some of which have been brought close to extinction. Students will learn how some arrived accidentally on boats, while others were brought in by people, to be used either as a form of pest control on farms, for hunting or hobbies, or as pets that sometimes get abandoned in the wild by owners. Many native animals, such as raccoons, squirrels, and coyotes have also become invaders in cities, back yards, and homes. Students can research invasive species in their areas and help find ways to stop these wild invaders from taking over the natural habitat."--Provided by publisher.

Explores different types of toys and games past and present. Includes color illustrations, a glossary, and further resources.

Describes the lives and experiences of women in the nineteenth-century American west.

Examines various aspects of life on cattle ranches in the nineteenth century.

Describes the hard rock mining industry that developed in the American west following the gold rush.

An alphabet book introducing occupations oriented to the community, including emergency workers, medical workers, the service industry, and business.

This book introduces readers to North America's early transportation, such as covered wagons, canal boats, and steam-powered boats and trains.

This book describes the homes, customs, and habits of seventeenth and eighteenth century North American settlers.