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Direct linkWhite, Jacob; Means, John A.; Hall, Tim; Shockley, Denise – Science Teacher, 2020
Polychlorinated biphenyls (PCBs) are a family of synthetic chemicals consisting of carbon, hydrogen, and chlorine atoms. PCBs have been produced commercially since 1929 in hundreds of industrial applications. Their continued production in the United States was phased out in the late 1970s, and strict disposal guidelines were regulated as adverse…
Descriptors: Science Instruction, Chemistry, Hazardous Materials, Animals
