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.
A fossil fuel is any hydrocarbon that may be used as a source of  energy. Coal, oil and natural gas are the three basic fossil fuels,  formed 300 million years ago from orga â¦ nic plant and animal life  subjected to great heat and pressure under the ground. They are  classes as non-renewable sources of energy.ossil fuels contain high percentages of carbon  and include coal, petroleum, and natural gas. When the carbon in  the fuel is burnt with oxygen from the atmosphere, the energy that  was used in photosynthesis is released and carbon dioxide is  re-formed.