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.
Being a non-carbon fuel, the exhaust is free of carbon dioxide. Carbon dioxide, emitted from our burning of fossil fuels, is causing the world's climate to change. Hydrogen is normally a gas and can be compressed and stored in cylinders.ydrogen-a very special type of gas. Liquefied natural gas (LNG) - natural gas that is very, very cold. Liquefied petroleum gas (LPG) - hydrocarbon gases under low pressure. Liquids made from coal-gasoline and diesel fuel that doesn't come from petroleum.