Natural Resources: Natural resources are materials or substances that occur naturally in the environment and can be used for economic gain. They include things like water, minerals, forests, and fossil fuels.
Nonrenewable Resources: Nonrenewable resources are natural resources that exist in limited quantities and cannot be easily replaced once they have been used up. They include fossil fuels like coal, oil, and natural gas.
Solar Energy: This is a renewable energy source that harnesses the power of the sun to generate electricity or heat. It is abundant and inexhaustible as long as the sun keeps shining.