Nitrogen credit trading opportunities are most likely in 142 of 170 nutrient-polluted watersheds
![Nitrogen credit trading opportunities are most likely in 142 of 170 nutrient-polluted watersheds](/webdocs/charts/57844/findings6_fig01_768px.gif?v=7880)
Nitrogen credit trading opportunities are most likely in 142 of 170 nutrient-polluted watersheds
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