Here's a breakdown:
* Biodiesel is a renewable fuel made from vegetable oils or animal fats. It's a clean-burning alternative to petroleum diesel, and it can be used in many diesel engines without modification.
* Ethanol is another biofuel, but it's derived from sugars found in plants like corn and sugarcane. It's often blended with gasoline to create E10, E15, and other fuel blends.
There are other less common biofuels derived from plants, but biodiesel and ethanol are the most widely produced and used.
