This document defines and categorizes different types of resources. It discusses natural resources, their characteristics, and how they are classified. Some key points: - Natural resources are things drawn from nature and used without modification. They can be renewable like solar and wind energy, or non-renewable like coal. - Resources are classified by their origin (abiotic like rocks, or biotic like plants), renewability (renewable or non-renewable), level of use (actual currently used resources or potential future resources), and distribution (ubiquitous found everywhere or localized in certain places). - People use natural resources to create human-made resources like buildings and infrastructure. People themselves are also a human