The U.S. Department of Agriculture , www.naas.usda.gov publishes charts on the price of farm products. Go to the USDA homepage and select “Find charts and maps” and then “Agricultural Prices.” Choose any three farm products and determine whether their prices (as measured by “prices received by farmers”) have generally increased, decreased or stayed the same over the past 3 years. In which of the three cases you think that he demand has increased more rapidly than supply or vice versa?