1.

Question : Higherconcentrationof DDT is foundin thirdtrophiclevel than firsttrophic level a) Name the phenomenonassociatedwiththe accumulation of DDTb) Bird populationis decreasedbythe accumulationof DDT How is it occurs ?

Answer»

SOLUTION :a)BIOMAGNIFICATION
B) DDTaffectsthe calciummetabolismof BIRDS ,causesthe thinningof eggshelland prematurebreakingthat it resultthe reductionin birdpopulation


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