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  1. DDT residues are rapidly passed through food chain causing bio-magnification because DDT is
    1. moderately toxic
    2. non-toxic to aquatic animals
    3. water soluble
    4. lipo soluble
Correct Option: D

DDT residues are rapidly passed through food chain causing biomagnification because DDT is lipo soluble. Biomagnification, also known as bioamplification or biological magnification, is the increase in concentration of a substance, such as the pesticide DDT, that occurs in a food chain as a consequence of:
• Persistence (slow to be broken down by environmental processes).
• Food chain energetics.
• Low (or non-existent) rate of internal degradation/excretion of the substance (often due to water-insolubility).



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