Think about grass, trees, flowers -- even the dirt and weeds -- all around you. Did you know these are the habitats or natural homes for insects, birds, and other animals? Not only are the plants important to Earth's animals, the health and safety of Earth's many different animals are important to your health. Learn why biodiversity is important, how the natural homes of various animals are being threatened, and what you can do now to preserve and protect our natural environment. Book features: Table of Contents; Glossary; For More Information including books and web sites; Index; photos and captions; charts and graphs; source notes.