Answer:
An increase in the popularity of corn ethanol as a fuel increases the demand for corn around the world, causing the price of corn to rise drastically.
Explanation:
Ethanol that is made by the fermentation of sugars extracted from plants such as corn acts as a biofuel that is the most common component of gasoline in some countries like the US and Brazil to reduce air pollution. The production of corn-based ethanol in the US has quadrupled since 2005 and uses 15% of corn production in the world.
As a consequence, the prices of corn increased significantly.
