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In the Chesapeake Bay, North America's largest estuary, an overabundance of nutrients fosters the formation of an oxygen-starved "dead zone" every summer. In its annual health report card last year, the bay earned only a D+. Deb Jaisi, an assistant professor of plant and soil sciences at the University of Delaware, wants to seek out the sources of a key nutrient so excessive that it has become a pollutant in the Chesapeake Bay - phosphorus (P). [Source: Physorg.com]
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