Fuel were present at the sites. As a fuel, wood has remained in use up until the present day, although it has been superseded for many purposes by other sources. Wood has an energy density of 10–20 MJ/kg. Recently biofuels have been developed for use in automotive transport (for example Bioethanol and Biodiesel), but there is widespread public debate about how carbon efficient these fuels are. Fossil fuels are hydrocarbons, primarily coal and petroleum (liquid petroleum or natural gas), formed from the fossilized remains of ancient plants and animals by exposure to high heat and pressure in the absence of oxygen
Plants Brook 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 the stream. It then flows south east to a pool near Wyndley Leisure Centre. Water is channelled from this pool to Wyndley Leisure Centre where there