Why is the breast milk of Inuit women living in pristine northern areas higher in PCBs than women living farther south?

Question

Quizplus · Accepted Answer

PCBs (polychlorinated biphenyls) are persistent organic pollutants that can travel long distances through the atmosphere. The local diet of Inuit women, which includes fish and whale, becomes contaminated with PCBs that have been carried from industrialized countries farther south by wind and ocean currents, leading to higher levels of PCBs in their breast milk despite living in what are considered pristine areas.

Why Is the Breast Milk of Inuit Women Living in Pristine