effect of human beings on

Explains why biodiversity is important to the earth and its inhabitants and why it's our obligation to protect.

Examines the scientific processes that create climate and weather and looks at their impact on human life, discussing weather extremes, and includes illustrations and a glossary.

Young Razo travels from Bayern to Tira at war's end as part of a diplomatic corps, but mysterious events in the Tiran capital fuel simmering suspicions and anger, and Razo must spy out who is responsible before it is too late and he becomes trapped in an enemy land.

Describes the migration of the desert elephants of Mali, West Africa; and discusses how the Tuareg, Dogon, and Fulani people work together to protect the balance of life in the desert.

Discusses how life is supported by the earth and how everything living is inter-related and co-dependent on the life cycle.

Explores how Earth's resources--water, carbon, phosphorus, nitrogen, and sulfur--are recycled through the natural process of life, growth, and decay.

Describes how human behavior can affect butterflies, explains how people can take action to ensure their survival, and introduces eleven species.

Deals with the reasons for the number of animal species that have become extinct throughout the world.