Ethanol is produced by alcoholic fermentation of the glucose in corn or other plants, and plants use the sun's energy to transform carbon dioxide gas and water into a sugar called glucose. Given these facts, production of ethanol is dependent  on  among the following options:
- the environment
 - the sun's energy
 - rubbing alcohol
 - Movement of an air mass
 - Rayleigh scattering
 - agriculture
 - heat produced
 - vinegar


 

  the sun's energy       