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.
See also supersaturated. 2. (Colours) (of a colour) having a large degree of saturation. 3. (Elements & Compounds) (of a chemical compound) a. containing no multiple bonds and thus being incapable of undergoing additional reactions: a saturated hydrocarbon. b. containing no unpaired valence electrons. 4. (Chemistry) (of a fat, esp an animal fat) containing a high proportion of fatty acids having single bonds.