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Observe figure and answer the following questions.
i. What ecological term is used to describe the DDT accumulation at different trophic levels?
Answers (1)
(i) Biomagnification is the ecological term used to describe DDT accumulation at different trophic levels.
(ii) An effect of DDT accumulation on birds includes thinning of eggshells, and their premature breaking as the metabolism of birds get disturbed.
(iii) DDT accumulation leads to eutrophication, i.e. increased life in a water body.
(iv) DDT accumulation leads to eutrophication, which ultimately results in increased Biological Oxygen Demand.
(v) Minamata disease happens due to accumulation of mercury, Blackfoot due to arsenic and Itai- Itai due to cadmium.
View full answer
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