Blood Types. Distinct molecules called agglutinogens (a type of antigen) are attached to the surface of red blood cells. There are two different types of agglutinogens, type A and type B.
Fossil fuels are hydrocarbons, primarily coal, fuel oil or natural gas, formed from the remains of dead plants and animals. In common dialogue, the term fossil fuel also includes hydrocarbon-containing natural resources that are not derived from animal or plant sources.
Fossil fuels are formed in the underground when the remains of dead plants and animals are buried for a long time under the layers or sediments of earth. Fossil fuels are hydr â¦ ocarbons, primarily coal, fuel oil or natural gas. 3 people found this useful.