In Learn About Earth's Systems: Bays, readers will explore how the water, ground, air, and plant and animal life interact. This series takes readers on a journey to eight of America's bays. Readers will learn about the geosphere, atmosphere, hydrosphere, and biosphere--Earth's four systems. They will discover how the systems connect, and how they contribute to the delicate balance of each bay. Books are aligned to curriculum standards and include sidebars, activities, glossary, index, and colorful graphics, maps, and diagrams to enhance the reader's experience.