biofuels Flashcards
1
Q
what are biofuels
A
liquid fuels produced from biomass materials (plants)
2
Q
what are most biofuels used as
A
transportation fuels
3
Q
what are examples of biofuels (3)
A
wood
ethanol
biodiesel
4
Q
what is an advantage of biofuels
A
they absorb the same carbon that burning them emits
5
Q
what are disadvantages of biofuel (3)
A
-plant inputs needed for biodiesel are more expensive than petroleum
- uses agricultural land
- drive up price of food
