Hydrogen gas is often called the fuel of the future. The problem with hydrogen gas as a fuel is that it

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    is a nonrenewable resource that would quickly be exhausted.
     all must be produced using a primary energy source.
     would upset the hydrological cycle.
     would be very polluting to burn.
asked Jun 25, 2012 in Environmental Science by anonymous
    

1 Answer

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all must be produced using a primary energy source.
answered Jun 26, 2012 by Geodude ~Top Expert~ (9,680 points)

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