| http://www.w3.org/ns/prov#value | - The International Agency for Research on Cancer (IARC) classifies DDT as a Group 2B carcinogen (possibly carcinogenic to humans) (IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 1992).PCBs are a group of related compounds (congeners) composed of two carbon-linked benzene rings to which are attached between 1 and 10 chlorine atoms.
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