Bio-fuels

• Bio-fuels are Made from Plants and Waste
• Bio-fuels


  Renewable energy resources created from either plant products or animal dung
• Bio-fuels


  • They can be solid, liquid or gas
  • They can be burnt to produce electricity or run cars in the same way as fossil fuels
• Components of a bio-fuel system


  • bio-fuel
  • boiler
  • turbine
  • generator
• Bio-fuels are supposedly carbon neutral, although there is some debate about this as it's only really true if you keep growing plants at the rate that you're burning things
• Bio-fuels


  • They are fairly reliable, as crops take a relatively short time to grow and different crops can be grown all year round
  • They cannot respond to immediate energy demands, so they are continuously produced and stored for when they are needed
• Pros of bio-fuels


  • They are supposedly carbon neutral
  • They are fairly reliable
• Cons of bio-fuels


  • The cost to refine bio-fuels so they are suitable for use is very high
  • Growing crops specifically for bio-fuels may mean there isn't enough space or water to meet the demands for crops that are grown for food
  • In some regions, large areas of forest have been cleared to make room to grow bio-fuels, resulting in lots of species losing their natural habitats, and the decay and burning of this vegetation also increases carbon dioxide (CO2) and methane emissions