The following facts pertain to global food prices as discussed in Patrick Barta, "Crop Prices Soar, Pushing up Cost of Food Globally", Wall Street Journal, April 9, 2007: a) One of the chief causes of food-price inflation is new demand for ethanol and biodiesel, which can be made from corn, palm oil, sugar and other crops. That demand has driven up the price of those commodities, leading to higher costs for producers of everything from beer to eggs to soft drinks. b) Some economists think prices could come back down over time, especially if some countries that have more land could be put under cultivation- particularly Brazil- can greatly increase production. c) Technological advances, such as better seed varieties, could also help boost production to keep up with demand. d) Changes in diet are also exacerbating the problem, as rising incomes allow the Chinese and consumers in many other places to eat more. Show the effects of each of these factors equilibrium food prices using demand and supply analysis (graphically).