The Main Problem with Use of Conventional Natural Gas as a Transportation

question 10

Multiple Choice

The main problem with use of conventional natural gas as a transportation fuel is

• A)the expensive engine modifications required to convert an automobile for use of natural gas
• B)the fact that it has higher CO2 emissions than gasoline produced from conventional oil
• C)the very low reserves, which could supply U.S. a.needs for less than 25 years
• D)the fact that not many fueling stations exist at present
• E)more than one of these answers

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