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题目 scientists have observed large concentration of heavy metal deposits in the upper twenty centimeters of sediments from the Baltic Sea, findings consistent with the growth of industrial activity in the area.题目 scientists have observed large concentration of heavy metal deposits in the upper twenty centimeters of sediments from the Baltic Sea, findings consistent with the growth of industrial activity in the area.题目 scientists have observed large concentration of heavy metal deposits in the upper twenty centimeters of sediments from the Baltic Sea, findings consistent with the growth of industrial activity in the area. |
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