Propane Information. Propane is the most common liquefied petroleum gas (LP-Gas) and supplies about 4% of the U.S. total energy needs. It is a hydrocarbon composed of three parts carbon and eight parts hydrogen, or C3H8.Propane comes from two sources â when refining crude oil and when processing natural gas. Propane is a colorless, odorless gas. A commercial odorant is added in order to make propane detectable in the case of a leak.ropane Information. Propane is the most common liquefied petroleum gas (LP-Gas) and supplies about 4% of the U.S. total energy needs. It is a hydrocarbon composed of three parts carbon and eight parts hydrogen, or C3H8. Propane comes from two sources â when refining crude oil and when processing natural gas.
submissiveness - the trait of being willing to yield to the will of another person or a superior force etc. 1  obedience - the trait of being willing to obey. 2  obsequiousness, servility, subservience - abject or cringing submissiveness. 3  passiveness, passivity - submission to others or to outside influences.
permissiveness A certain relationship between hormones and the target cell when the presence of one hormone, at a certain concentration, is required in order to allow a second hormone to fully affect the target cell. synergism Two or more things functioning together to produce a result not independently obtainable.