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I don't exactly know this myself but I think it might be......
because it doesn't produce any greenhouse gases or carbon dioxide (CO2)
Answer:
Ethanol (as a motor fuel) is not especially friendly as:
- it produces significant pollution per distance driven because of it low energy density
- the low energy density reduces the distance per tankful of fuel
- tail pipe emissions contain more aldehyde and ketone than hydrocarbon fuel
- its production requires a significant fermentation and distillation manufacturing process
- its manufacture requires more energy in then energy out when compared to hydrocarbon fuels
- agricultural land is taken out of food production and put into fuel production
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∙ 13y ago
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