Q.6 Which of the following causes biomagnification?
1.
2. Mercury
3. DDT
4. Both (b) and (C)
Ans. (d) Biomagnification, also called bioaccumulation is the accumulation of non-biodegradable toxic material like Hg, DDT, etc, in different trophic levels. In the process of bioaccumulation, tho concentration of non- biodegradable pollutants increases at each successive Irophic level of the food chain, thus harming the environment/ecosystem at an alarming rate, whereas (sulfur dioxide) is an air pollutant and acts as a precursor of acid rain.
