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ENVI 24 introduces the field of ecotoxicology which uses toxicity test methods in concert with environmental data to provide an assessment of the effects of chemicals on individual organisms, populations and ecosystems. Toxicity tests are important monitoring tools used by industries and agencies to determine the potential for adverse effects of discharges into the environment.  Held as an intensive field and laboratory course in the spring term of the second year, students will learn toxicity testing techniques and associated data analysis procedures. Students will sample industrial wastewater, assess its chemical characteristics, and use this data in concert with toxicity data to interpret the observed effects on biota. Students will work individually and in groups and create a report on the data collected.