Image: Farm runoff. Image credit: Lynn Betts / USDA NRCS. Article by Elliott Negin. Union of Concerned Scientists: The Equation...
dead zone
Photo caption: Matthew Backer wears a gas mask as he spreads anhydrous ammonia onto a field on April 4 at...
Image: Farm runoff. Image credit: Lynn Betts / USDA NRCS. Article by Elliott Negin. Union of Concerned Scientists: The Equation...
Photo caption: Matthew Backer wears a gas mask as he spreads anhydrous ammonia onto a field on April 4 at...
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