Word: pcps
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Dates: during 1990-1999
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...that killed some 20,000 North Sea seals in 1988. While viral epidemics are part of the natural ecology of the sea, some scientists think this outbreak was aggravated by man-made pollution. Autopsies on the mammals show their tissues are contaminated with metals and the toxic polychlorinated biphenyls (PCPs). The chemicals may have weakened the dolphins' immune systems, making the animals more vulnerable to disease...