Editing CW9:3579

==Clean Fuels: An Overview== 

===1) What is a common disadvantage of switching to clean fuels for vehicles?===
There is a lower vehicle range and performance. There is also a higher vehicle cost.

===2) What is the most overwhelming common advantage of switching to clean fuels?=== 
There are lower emissions of ozone-forming hydrocarbons and toxics.

===3) Does this article really answer whether clean fuels are feasible?=== 
Somewhat, it talks about higher vehicle and fuel costs. The cost will rise with demand and there will be a limited supply.

==Alternative Fuels== 

===4) List the fuels on the Comparison chart by octane rating, from lowest to highest:===
8-15 Crude Oil; ~25 Soy bean oil, waste cooking oil, animal fats, and rapeseed oil; 100 Natural gas, coal, or woody biomass, corn, grains, or agricultural waste; 104 a by product of petroleum refining or natural gas processing; 120+ Underground reserves; 130+ Natural gas, mathanol, and other energy sources 

5) Which alternative fuel has the most diversity to date for types of vehicles? 

6) Rank the all the fuels on the chart by their energy content from highest to lowest: 

7) Gaging by the chart, what seems to be the safest fuel? 

8) Do you have any way of gaging whether this chart was accurate or not? How would you go about finding out if it is true or not? 

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