Final answer:
Humans' use of Earth's natural resources falls under the theme of Environment in geography, examining the interplay between human activities and the physical environment.
Step-by-step explanation:
The use of Earth's natural resources by humans falls under the theme of Environment in geography. This theme examines the ways that human activities relate to the physical environment and how they impact and modify the Earth's landscapes and resources. Key aspects of this theme include human dependence on, adaptation to, and modification of the physical environment. The study of how humans use resources incorporates elements from both physical geography, which deals with the planet's physical systems, and human geography, which involves studies of human culture and interactions with the environment.
In geography, Environment is a fundamental concept that reflects the interactive relationship between humans and the natural world. Topics such as resource distribution, environmental change, and sustainable use of resources are analyzed to understand the impact of human activity on Earth's systems, including the hydrosphere, atmosphere, biosphere, and lithosphere.