Why do we hav food price inflation?

Grocery prices have risen 2-3% each year since 1990. There are four causes of this inflation in world food prices.

First, high gas prices prices lead to higher food prices. Food is transported great distances, especially if imported. That raises shipping costs, which translates into higher food prices. High gas prices are caused by high oil prices cause high gas prices. It usually takes about six weeks for increases in oil futures to translate to the pump.

Oil byproducts are also used to make fertilizer. That contributes 20% of the cost of raising grain.  Higher oil prices increase corn, wheat, and soybean cost by 40% between 2001 and 2007. 

Second, the U.S. government subsidizes corn production that is used for bio-fuels. This takes corn out of the food supply, raising prices. America now uses 40% of its corn crop to make ethanol. That's up from 6% in 2000. (Source: "Oily Food," The Economist , October 10, 2015)

Grocery prices have risen 2-3% each year since 1990. There are four causes of this inflation in world food prices.

First, high gas prices prices lead to higher food prices. Food is transported great distances, especially if imported. That raises shipping costs, which translates into higher food prices. High gas prices are caused by high oil prices cause high gas prices. It usually takes about six weeks for increases in oil futures to translate to the pump.

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b is the correct answer