Technology
Explanation
Resources are broadly classified into three categories: Natural, Human-made, and Human resources. Natural resources are drawn from nature and used without much modification (e.g., air, water, minerals). Human-made resources are created by humans using natural resources to produce items of utility or tools to interact with the environment.Option Analysis:
- Spring water: It is a natural resource obtained directly from the environment.
- Tropical forests: These are naturally occurring ecosystems (biotic resources) and are not manufactured by humans.
- Technology: It is the application of knowledge, skills, and tools created by humans to solve problems or create products. Since it is a product of human innovation and intervention, it is classified as a human-made resource.
- Iron ore: It is a natural mineral resource found in the Earth's crust.
Key Takeaway: Human-made resources include infrastructure (bridges, roads), machinery, and technology, which are developed by humans to utilize natural resources effectively.