A study found high levels of endocrine-disrupting chemicals (EDCs), such as synthetic hormones and pharmaceuticals, in a freshwater lake located downstream from a wastewater treatment plant. Scientists observed developmental abnormalities in fish populations, including altered reproductive anatomy and reduced fertility rates. The lake is also used for recreation and irrigation.
Identify one likely source of EDCs entering the lake.
Explain how EDCs affect aquatic organisms at the population level.
Describe one human activity that may contribute to pharmaceutical pollution in water bodies.
Describe one specific developmental or reproductive change observed in aquatic species exposed to EDCs.
Explain how EDCs can bioaccumulate and biomagnify in aquatic food webs.
Describe one method that wastewater treatment facilities can use to reduce EDC levels.
Identify and describe one policy or regulation that addresses water pollution in the U.S.
Explain how EDC contamination could impact human health.
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