Question

which of the following is not an impact of using gasoline mixed with ethanol instead of pure petroleum - based gasoline? decreases cost of fuel reduces dependency on petroleum increases smog decreases acid rain

Explanation:

Gasoline - ethanol mixtures burn more cleanly, reducing emissions that cause acid rain and smog, and also reduce petroleum - dependency. However, they may not necessarily decrease fuel cost as the price of ethanol and its production costs can vary.

Answer:

decreases cost of fuel