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Seabirdsu Protective Oil Helps Gauge Levels Of PCB Contamination
July 24, 2007 @ 07:59 AM (EST)
Source: Nytimes.com
Source: Nytimes.com
One way scientists try to gauge the extent of environmental contamination by substances like polychlorinated biphenyls, or PCBs, is to measure the levels in animal tissue. In marine environments, seabirds are a useful gauge, because as predators high on the food chain they accumulate such organic pollutants in their body fat as they eat other organisms...
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