really need help, please answer any if possible
- The energy and financial cost of separating ethanol from the aqueous ethanol produced in fermentation.
- What percentage of ethanol can be added to petrol without engine modification?
- Requirements of engines using ethanol only.
- The effect on exhaust pollutants of using ethanol fuel.
- The economic cost at different prices for oil, costs and subsidies, and different rates of taxation levied by governments, on different fuels.