Environment 7/e is a comprehensive, systems-based environmental science text known for an accessible writing style and for its student-friendly integrated learning system designed to help students move from general concepts to specific applications. The new edition continues the tradition of currency as well as the systems approach, which emphasizes the interconnected nature of environmental science throughout the text making Environment 7/e the most student-friendly environmental science book. The result is a text that provides the basic facts, the various perspectives on the issues, and the framework for students to reach their own informed decisions so they can take an active, positive role in understanding and addressing the environmental challenges of today and tomorrow