(Definition of âallotâ from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press) allot in American English See all translations
Fossil fuel s-fuels derived from the remains of dead organisms. Examples include coal, oil, oil shales, tar sands, natural gas, and peat. Hydrocarbon s are molecules that incorporate both carbon and hydrogen. When hydrocarbon molecules are exposed to heat, the bonds linking the carbon and hydrogen atoms break.
The other type of fossil is called a trace fossil, where evidence of the organism but not the actual organism is preserved, such as a track, a burrow, a nest, or even feces. Characteristics and Examples of Fossil Formation. The many different ways organisms are preserved gives fossils different characteristics.