Which of the following is true about biofuels?
Athey are made from plant materials and animal fats.
Bthey are made by directly harnessing energy from the sun.
Cthey use energy from water.
Dthey use energy from the earth���s core.
Athey are made from plant materials and animal fats.
Bthey are made by directly harnessing energy from the sun.
Cthey use energy from water.
Dthey use energy from the earth���s core.