A fuel source is a material or substance that can be used to produce energy. This energy can be harnessed for various purposes, such as powering vehicles, generating electricity, or heating homes. Common fuel sources include fossil fuels like coal, oil, and natural gas, as well as renewable energy sources like solar, wind, and biomass. Different fuel sources have varying impacts on the environment and economy. For example, while fossil fuels are efficient and widely used, they contribute to pollution and climate change. In contrast, renewable energy sources are more sustainable and have a lower environmental impact, making them increasingly popular in energy production.