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The rate of degradability of pollutants is determined by its stability and ___________

(a) residence time

(b) fermentation time

(c) instability

(d) growth

The question was posed to me in a job interview.

I would like to ask this question from Biodegradable Organic Pollutants in chapter Biodegradation of Organic Pollutants of Environmental Biotechnology

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Correct choice is (a) residence time

The best I can explain: The rate of degradability of pollutants is determined by its stability and residence time in the environment, pollutants cannot grow as they are not living organisms, fermentation is not observed in pollutants, instability is not a measure of rate of degradability.

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