Biofuel

• What is a biofuel?

  A fuel made from recently living organisms
• Why is the distinction of "recently living" important for biofuels?

  Because fossil fuels come from ancient organisms
• What are the primary sources of biofuels?

  Plants and algae
• How do plants and algae contribute to biofuels?

  They photosynthesize and store solar energy
• Can animal waste be used for biofuels?

  Yes, but on a smaller scale
• Why are biofuels considered carbon neutral?

  They absorb CO2 while growing
• What makes biofuels a renewable resource?

  They can be grown repeatedly
• What is a benefit of biofuels regarding cost?

  They are relatively cheap to make
• How can biofuels be utilized with existing vehicles?

  They can be mixed with fossil fuels
• What environmental issue arises from growing biofuel crops?

  Conversion of natural land and deforestation
• What is a consequence of cutting down forests for biofuel production?

  Release of CO2 from burned trees
• What energy requirements are associated with biofuels?

  Harvesting, processing, and transporting require energy
• How do the overall benefits of biofuels compare to initial expectations?

  They are not as good as initially thought
• When can biofuels be a good substitute for fossil fuels?

  When used properly in suitable contexts
• What are the pros and cons of biofuels?

  Pros:

  • Made from recently living organisms
  • Carbon neutral when grown
  • Renewable resource
  • Relatively cheap to produce
  • Easy to transport and mix with fossil fuels

  
  

  Cons:

  • Requires land that may involve deforestation
  • Energy required for harvesting and processing
  • Overall CO2 emissions can be high
• What is the conclusion about biofuels mentioned in the video?

  They can be beneficial when used properly