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.
Environment and price. Besides, compressed natural gas (CNG) is used as a motor fuel instead of petroleum products, since it has a number of advantages, the most important being high eco-friendliness and low price.