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For Lake Erie, V = 458 km3 and F = 175 km3/year. Suppose that one day its pollutant concen
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For Lake Erie, V = 458 km3 and F = 175 km3/year. Suppose that one day its pollutant concentration is C0 and that all incoming
pollution suddenly stopped (so I = 0). Determine the number of years it would then take for pollution levels to drop to
C0/10. Give your answer in decimal form, rounded to the nearest year.
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