11. DDT is a _________________ pollutant
12. BOD stands for
13. The phenomenon of accumulation of non-biodegradable pesticides in human beings
14. A biodegradable plastic developed by Biopak Corporation Australia
15. The darkening of the skin due to arsenic poisoning is called
16. What is oil slick?
17. The famous Minamata disease in Japan is due to the accumulation of____________in fishes
18. The worst nuclear accident happened to date is occurred at ___________
19. Major cause of Ozone depletion is due to which chemical?
20. Disease aggravated by air pollution is
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