On the graph, show the long-run effects of the pollution crackdown.

Use the following information to work Problems 10 and 11.

Grain, soybean prices fall Grain and soybean prices tumbled on news that production would be greater than previously expected. The bigger-than-expected production forecasts come as grain farmers are wrestling with a decrease in overseas demand for grain.

Source: The Wall Street Journal, November 10, 2015