| http://www.w3.org/ns/prov#value | - arsenic, emitted from some industrial processes, benzene, emitted from burning coal and oil, motor vehicle exhaust, and evaporation from gasoline service stations, and found in industrial solvents, benzo(a)pyrene, formed during the incomplete burning of coal, oil and gas, garbage, or other organic substances like tobacco or charbroiled meat, and lead, which comes from human activities including bu
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