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.
There are a number of gases that fall under the âLPGâ label, including propane, butane, propylene, butadiene, butylene and isobutylene, as well as mixtures of these gases. Propane does not occur naturally. LPG is produced during natural gas processing and petroleum refining.ollowing its refinement, LPG is stored as a liquid under pressure until used, at which point it becomes a gas or vapour. In Australia, LPG is Propane. Propane is a three carbon molecule with the formula C3H8.