what percentage of the world's energy is fossil fuels
World energy consumption The twentieth century saw a rapid twenty-fold increase in the use of fossil fuels. Between 1980 and 2006, the worldwide annual growth rate was 2%.[19] According to the US Energy Information Administration's 2006 estimate, the estimated 471.8Â EJ total consumption in 2004, was divided as given in the table above, with fossil fuels supplying 86% of the world's energy:
Rate equation k is the first order rate constant, which has units of 1/s or sâˆ’1.
Life-cycle assessment Calculations for impact can then be done by hand, but it is more usual to streamline the process by using software. This can range from a simple spreadsheet, where the user enters the data manually to a fully automated program, where the user is not aware of the source data.
New Madrid Seismic Zone Instruments were installed in and around the area in 1974 to closely monitor seismic activity. Since then, more than 4,000 earthquakes have been recorded, most of which were too small to be felt. On average, one earthquake per year is large enough to be felt in the area.