Bio-magnification

Bio-magnification is the process by which the concentration of a toxin in the tissues of organisms at successively higher levels of the food chain. Experts have opined that the mysterious illness in Eluru town, Andhra Pradesh. The health department officials in the state have detected lead and nickel in the blood samples of the affected persons though the same in drinking water sample were only in minute quantity. The high concentration is said to be due to bio-magnification.