Biofuels

Question 1

Where are biofuels from

Answer 1

Plants or algae or animal waste

Question 2

Adv of biofuels

Answer 2

• a renewable resource
• cheap to make
• easy to transport
• mix with fossil fuels to make petrol

Question 3

Disadvantages of biofuels

Answer 3

• need somewhere to grow lots of plants
  = find space by cutting down forests
• harvesting, transporting and processing requires a lot of energy