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ENV100Y5 (713)
murk (80)
Lecture

env100 note 59.docx

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Department
Environment
Course
ENV100Y5
Professor
murk
Semester
Winter

Description
ENV100 Lecture NotesMar 26 2012 Environmental Health continued Reading Chapter 19Toxins can act in several different waysCarcinogens cause cancerMutagens cause DNA mutations o Can lead to severe problems including cancerTeratogens cause birth defectsAllergens overactivate the immune system Neurotoxins damage the nervous systemEndocrine disruptors interfere with the endocrine hormone systemAirborne toxins can travel widelyPesticide driftairborne transport of pesticidesSynthetic chemical contaminants are found globally o They appear in arctic polar bears Antarctic penguins and people living in GreenlandSome toxins persist for a long timePersistent toxins can either degrade quickly or remain unaltered and persist for decades o Rates of degradation depends on temperature moisture and sun exposureBreakdow
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