Biofuels

• Give 3 advantages of biofuels

  1. Renewable
  2. easy to transport
  3. can be used in the vehicles we have today e.g. cars that use petrol
• What is a biofuel?

  Fuels made from plant material or animal waste
• Give 2 disadvantages of biofuels

  1. Require a large area of land to grow
  2. require a lot of energy to harvest, process and transport
• Why are biofuels carbon neutral?

  They absorb the same amount of Co2 while geowing as they release when they’re burned - there is no net release of Co2
• How is biofuel different to a fossil fuel like petrol?

  Biofuels - made from living/recently living organisms like plants and algae or animal waste

  Fossil fuels - made from organisms which died millions of years ago
• Why are biofuels not really carbon neutral in practice?

  Growing biofuels = clearing land by cutting trees

  trees can no longer photosynthesise and absorb CO2 themselves + release large amounts of Co2 if burned

  usually requires alot of energy to harvest, process and transport the biofuels which will itself produce alot of Co2