Lucy was found by Donald Johanson and Tom Gray on November 24, 1974, at the site of Hadar in Ethiopia. They had taken a Land Rover out that day to map in another locality. After a long, hot morning of mapping and surveying for fossils, they decided to head back to the vehicle.
Alkanes are an example of saturated compounds. An unsaturated compound is a chemical compound that contains carbon-carbon double bonds or triple bonds, such as those found in alkenes or alkynes, respectively. Saturated and unsaturated compounds need not consist only of a carbon atom chain.
The Ring Carbons can be arranged in a ring, such as cyclobutane. Unsaturated Hydrocarbons A hydrocarbon that contains one or more double or triple bonds is an unsaturated hydrocarbon. There are three types of unsaturated hydrocarbons alkenes, alkynes, and aromatic hydrocarbons.Alkenes Many fruit bearing plants produce ethene, which controls the rate at which fruits ripening. Alkynes Alkynes are the most reactive hydrocarbon compounds.here are three types of unsaturated hydrocarbons alkenes, alkynes, and aromatic hydrocarbons. Alkenes Many fruit bearing plants produce ethene, which controls the rate at which fruits ripening. Alkynes Alkynes are the most reactive hydrocarbon compounds.