The most authoritative introduction to physical geography with new applications to real-world geography: Among the most highly regarded texts in physical geography, Robert Christopherson’s best-selling Geosystems: An Introduction to Physical Geography is known for its meticulous attention to detail, up-to-date accuracy, and rich integration of climate change science. Uniquely organized, the text presents Earth systems topics as they naturally occur: atmosphere, hydrosphere, lithosphere, and biosphere. This interconnected and organic systems-based approach is highlighted in strong pedagogical tools, a structured learning path, and current, updated information. The 10th Edition includes new features and activities that help readers apply geography to the real world, revised infographics, and new exercises designed to enhance learning.