What theme of geography involves the physical processes of the planet?

The theme of geography that specifically deals with the physical processes of the planet is Physical Systems. This theme encompasses the natural features and phenomena of the Earth, including landforms, climate patterns, ecosystems, and how these physical characteristics interact with each other. Understanding physical systems is crucial for grasping how natural processes shape the environment and influence human activities.

For instance, studying physical systems can help explain how rivers carve valleys, how different climates affect vegetation, or how tectonic activities can lead to earthquakes and volcanic eruptions. This knowledge forms the foundation for further exploration into how humans adapt to and modify their environments. Other themes, while related to geography, focus on human influences, societal interactions with the environment, and the characteristics of specific places or regions, rather than purely the physical processes of the Earth.