Question : PesticideDDTwas usedto controlinsect such asmosquitoesand agriculturalpests .But DDTpersistedin the environmentand transportedfromone trophiclevel to highertrophiclevels.a) Name thephenomenon and explain it .b)what happens to the concentrationof DDTin eachtrophiclevel?

Question : PesticideDDTwas usedto controlinsect such asmosquitoesand a

1.	Question : PesticideDDTwas usedto controlinsect such asmosquitoesand agriculturalpests .But DDTpersistedin the environmentand transportedfromone trophiclevel to highertrophiclevels.a) Name thephenomenon and explain it .b)what happens to the concentrationof DDTin eachtrophiclevel?
Answer» SOLUTION :a)BIOMAGNIFICATION .Biomagnification REFERSTO increasein concentrationofthe toxicantat successivetrophic levels. b) Non biodegradabletoxic substanceaccumulated by anorganismcannot bemetabolishedorexcreted and it is passed to thenext higher TROPHIC level.