Dolphins are having trouble reproducing according to a new study, and it’s because of industrial chemical pollution. Polychlorinated biphenyls or PCB’s, which can last in an animal’s body for a lifetime because they are stored in fat, were commonly used in industrial equipment and paint over the past few decades. As the chemicals were released into waterways, they worked their way into dolphin’s bodies, and are now threatening future generations of harbor porpoises, since the chemicals can be passed down from the mother to offspring.
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