Because fossil fuels form from the remains of plants and animals, all fossil fuels contain carbon, too. Most of the carbon in fossil fuels exists as hydrocarbons, which are hydrogen-carbon compounds. Fossil fuels may exist as liquids, gases, or solids.Liquid Fossil Fuels: Petroleum A liquid mixture of complex hydrocarbon compounds is called petroleum.oal is a fossil fuel that forms underground from partially decomposed plant material. Coal was once the major source of energy in the United States. When fossil fuels, including coal, are burned, most of the energy released is heat.
Natural law (Latin: ius naturale, lex naturalis) is a philosophy that certain rights are inherent by virtue of human nature endowed by nature, God, or a transcendent source, and can be understood universally through human reason.
Natural law, in philosophy, a system of right or justice held to be common to all humans and derived from nature rather than from the rules of society, or positive law. 1  There have been several disagreements over the meaning of natural law and its relation to positive law. Aristotle (384â322 bce) held that what was âjust by natureâ was not always the same as what was âjust by law,â that there was a natural justice valid everywhere with the same force and ânot existing by peopleâs thinking this or that,â and that appeal could be made to it from positive law.