Premise: Hundreds of sea gulls scavenge for food as bulldozers bury rubbish at the now-closed Wake County Landfill in North Raleigh in this file photo. A study by Duke University researchers concludes that gulls feeding on trash can be a significant course of nitrogen and phosphorus at nearby lakes. TRAVIS LONG TRAVIS LONG
Hypothesis: It was found by the researchers that the sea gulls feasting on the trash can lead to an increase in the level of nitrogen and phosphorous in the water present in the lakes, that are closer to the rubbish.