What are biofuels?

Biofuels are renewable fuels sourced from biological materials, such as plants and organic waste. This category includes products like ethanol and biodiesel, which are produced through processes that convert biomass into energy. The significance of biofuels lies in their ability to provide an alternative to fossil fuels, as they can be replenished through natural biological processes. They can help reduce greenhouse gas emissions and dependence on non-renewable energy sources, contributing to a more sustainable energy future.

The other choices don't accurately describe biofuels. Fuels derived solely from mineral sources are characteristic of fossil fuels, which do not include biological materials. Non-renewable fossil fuels are finite resources formed over millions of years from decomposed organic matter and are not considered renewable. Chemicals used to enhance fossil fuel efficiency refer to additives that improve the performance of existing fossil fuels rather than substances produced from biological sources.