• DDT is an insecticide and is non-biodegradable compound.
• Once this insecticide sprayed in the environment, it stays for very long time and through food chain into the organisms.
• According to the concept of biomagnification, the maximum accumulation of a nonbiodegradable pollutant is maximum in the highest trophic level.
• Hence, DDT gets accumulates at each trophic level and since, man is at the highest trophic level, there is maximum accumulation of DDT observed in them.