biofuels

• What is the definition of biofuel?

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

  Because fossil fuels come from organisms millions of years old
• What are the primary sources of biofuels?

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

  They photosynthesize and store the sun's energy
• What is another potential source of biofuels besides plants and algae?

  Animal waste
• Why are biofuels generally 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 is a significant environmental concern related to growing biofuels?

  Converting natural land can damage the environment
• What is a consequence of cutting down forests for biofuel production?

  It releases tons of CO2 into the atmosphere
• 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 first thought
• When can biofuels be a good substitute for fossil fuels?

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

  Pros:

  • Carbon neutral when grown
  • Renewable resource
  • Relatively cheap to produce
  • Easy to transport and mix with fossil fuels

  
  

  Cons:

  • Requires land, potentially damaging the environment
  • Energy needed for harvesting and processing
  • CO2 emissions from land conversion
• What is the conclusion of the video regarding biofuels?

  They can be beneficial when used appropriately