Question: what are the advantages and disadvantages of replacing gasoline with renewable fuels such as ethanol?
Answer: Advantages of Ethanol Fuel. Ethanol fuel is cost effective compared to other biofuels. Ecologically effective. Minimizes global warming. Easily accessible. ... 
Disadvantages of Ethanol Fuel. Requires large piece of land. Distillation process is not good for environment. Spike in food prices. Water attraction.