# data[].attributes.body
Because the demand for ethanol increases, the equilibrium price for corn also increases. Corn is needed, it is the input for cereal. So, the price of cereal will also increase, so, the demand will decrease in the short run. The demand curve then shifts towards the left, decreasing the equilibrium price for the cereal market.

# data[].attributes.body
Since the demand of ethanol increases, the market equilibrium price of corn increases. So the supply for cereal will decrease in the short run. Therefore, the supply curve will shift to the left side which causes the decrease in quantity and the increase in price in the cereal market.