Energy

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Across
  1. 2. biofuel is made from ....... material
  2. 3. wood can be burned to produce this
  3. 5. this is a type of energy that uses natural resources
  4. 6. when gasoline and corn are mixed together they are called...
  5. 7. In brazil they make ethanol biofuel with mostly this
  6. 8. soybeans,corn,sugarcane and oil palms are classified as what kind of crops
  7. 9. when fossil fuel lets out carbon dioxide the heat gets trapped in the atmosphere which affects the...
Down
  1. 1. when biofuels are being used it produces less of this
  2. 4. biofuel is friendly to what?
  3. 6. if you are unable to make biofuel using corn or soybeans what do you use?