Hi Aspirant!

Biomagnification refers to the rise in the contaminated substances/chemicals caused by the intoxicating environement. It is any concentration of a toxin, such as pesticides, in the tissues of tolerant organisms at successively higher levels in a food chain. The other organic substances which causes biomagnification in aquatic food chain except DDT are:

• Hexachlorobenzene (HCB)
• PCBs (polychlorinated biphenyls)
• Toxaphene
• Monomethylmercury

Thankyou!