Fossil fuel embedded energy is still photosynthetic in origin. Terrestrial plants, on the other hand, tended to form coal and methane. Many of the coal fields date to the Carboniferous period of Earth's history. Terrestrial plants also form type III kerogen, a source of natural gas. There is a wide range of organic, or hydrocarbon, compounds in any given fuel mixture. The specific mixture of hydrocarbons gives a fuel its characteristic properties, such as boiling point, melting point, density, viscosity, etc. Some fuels like natural gas, for instance, contain only very low boiling, gaseous components. Others such as gasoline or diesel contain
Plants Brook crayfish, nymphs, stoneflies, mayflies and fresh water shrimps. Minnows were also found to be living in the stretch of water between Blackroot Pool and Town Gate. Plants Brook Plants Brook (originally Ebrook, Ebrooke or East Brook) is a stream in Erdington and Sutton Coldfield, Birmingham, England. It is a tributary of the River Tame, whose waters ultimately flow, via the Humber Estuary, into the North Sea. The source is in the Streetly area of Sutton Park where it flows as a small trickle to Blackroot Pool in Sutton Park, which has been formed as a result of the damming of