Puzzle Directions: Click on a puzzle piece and drag it where you want it. When you connect two pieces correctly, they will join together. This is an extra hard double-sided puzzle. The same map is printed on both sides the pieces. Some of the pieces are turned over to the wrong side. To flip a piece over, hold down the "T" key and click on the puzzle piece. Mix up the pieces again. View finished map in pop-up window.
Description: Map shows DIN concentration data for Southeast Coast estuaries in 2000 C.E. Levels of nitrogen range from good to poor, with good being less than 0.1 mg/L DIN concentration and poor being more than 0.5 mg/L DIN concentration. Source: , National Coastal Condition Report II (Washington, DC: Environmental Protection Agency, 2004) 114 Map Credit: Courtesy the private collection of Roy Winkelman