Corn ethanol is produced by means of ethanol fermentation and distillation. Corn ethanol is mainly used as an oxygenate in gasoline to produce a low-level blend. To a lesser extent, it is used as fuel for E85 flex-fuel vehicles. Corn is the main feedstock used for producing ethanol fuel in the United States
Darwin suggested that evolution occurred through a mechanism called natural selection. This involves descent with modification, and many textbooks liken this to "survival of the fittest". Hope this helps!
The acidity is secretions produce by plant roots.
C. It's necessary for the survival of the individual