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Fuels (Fossil Fuels (Examples (Coal (Was formed from trees and ferns that…

- - - - Was formed from trees and ferns that died and were buried and compressed under swamps
    - - Were formed from animals and plants that lived in the sea. Their remains were buried under layers of seabed. As the pressure, they eventually formed oil and natural gas
  - - - Compounds made up of hydrogen and carbon
        
        Hydrocarbons
- - - - Many fossil fuels, especially coal, contain sulphur
      - When burned the sulphur turns into sulphur dioxide
      - This gas dissolves in rainwater, forming sulphuric acid which is a strong acid
    - - Car exhausts emit oxides of nitrogen
      - When they dissolve in water vapour in the atmosphere they form nitric acid which has a low pH
  - - - Encouraging the use and development of alternative energy sources such as solar and wind energy
      - Using low-sulphur fuels such as natural gas (methane) instead of coal, turf and oil which have higher sulphur levels
      - Fitting catalytic converters in cars t remove pollutants such as oxides of nitrogen
      - Planting trees; absorb carbon dioxide from the air and produce oxygen
      - decreasing the use of fossil fuels as an energy source