Because natural gas is composed mostly of methane, a simple hydrocarbon, vehicles powered by natural gas emit less of certain pollutants than the burning of gasoline or diesel fuel.
A less of certain pollutants than the burning of gasoline or diesel fuel
B fewer of certain pollutants than burning gasoline or diesel fuel do
C less of certain pollutants than gasoline or diesel fuel
D fewer of certain pollutants than does burning gasoline or diesel fuel
E less of certain pollutants than those burning gasoline or diesel fuel
A less of certain pollutants than the burning of gasoline or diesel fuel
B fewer of certain pollutants than burning gasoline or diesel fuel do
C less of certain pollutants than gasoline or diesel fuel
D fewer of certain pollutants than does burning gasoline or diesel fuel
E less of certain pollutants than those burning gasoline or diesel fuel












