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PCBs in the Last Frontier
A Case Study on the Scientific Method
This interrupted case study is based on current research involving the global transport of polychlorinated biphenyls (PCBs). Students are asked to propose several hypotheses and experiments in an attempt to determine how PCBs are transferred globally. As the case unfolds, it becomes clear that the transport mechanism is more complicated than scientists first thought. The case requires minimal background knowledge and is suitable for major and non-major courses in biology, chemistry, and environmental science.
|Keywords:||Experimental design; PCB; polychlorinated biphenyl; bioaccumulation; persistent pollutants; sockeye salmon; Alaska|
|Topical Area:||Scientific method|
|Educational Level:||High school, Undergraduate lower division|
|Type/Method:||Interrupted; Journal Article|
|Subject Headings:||Biology (General) Chemistry (General) Analytical Chemistry Environmental Science Atmospheric Science Earth Science|
|Copyright:||Copyright held by the National Center for Case Study Teaching in Science, University at Buffalo, State University of New York. Please see our usage guidelines, which outline our policy concerning permissible reproduction of this work.|
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