Answer:
Biodiesel is the only biofuel that completed the requirements of the Clean Air Act. Biodiesel plants are cheaper than Ethanol plants.
Step-by-step explanation:
Ethanol is an alcohol product produced out of corn and vegetable waste. When it's combined with gasoline, it elevates the octane levels and reduces tailpipe emissions.
Biodiesel is a renewable fuel for diesel engines derived from natural oils.