Explains the environmental problems that result from the manufacture and disposal of everyday items made of metal and shows how the recycling of these objects can reduce these threats.
Describes the plants, animals, and human inhabitants of a tropical rain forest and discusses the importance of these unique environments and threats to their survival.
Describes the polar lands, discussing plant and animal life, how people survive at the poles, environmental threats, and the protection of polar lands.
Describes the world's deserts, discussing plant and animal life, resources, how people survive in the desert, and why desert lands are growing in size.