Like the millipedes, centipedes are highly segmented (15 to 177 segments), but with only one pair of walking legs per segment (millipedes have two legs per segment). The head of a centipede has a pair of antennae, jaw-like mandibles (called forcipules) and other mouthparts.
Although compressed natural gas (CNG) is a fossil fuel like diesel, gas and coal, it is far different in terms of its impact on the natural environment.
Compressed Natural Gas (CNG): The required unit of sale for motor vehicle CNG is the Gasoline Gallon Equivalent(GGE), which is defined as 5.66 lbs. of CNG. CNG provided for vehicles is typically dispensed at pressures of 3,000 pounds per square inch (PSI) or 3,600 PSI.