★★★★★
★★★★★
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Troubled Waters: A Mississippi River Story (2010)
Larkin McPhee
Bob Malos
剧情：
Farming practices in America's heartland, including excess fertilizers and poor soil conservation, have wrought unintended yet severe consequences on the Mississippi River. Fortunately, farmers, scientists, and citizens are pursuing more sustainable land-use practices that meet ambitious food production goals while ensuring the long-term health of precious natural resources.
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Troubled Waters: A Mississippi River Story评分
★★★★★
★★★★★
