A farmer was using pesticides on his farm. He used the produce of his farm as food for rearing fishes. He was told that fishes were not fit for human consumption because large amount of pesticides had accumulated in the tissues of fishes. Explain how did this happen?

Answers (1)

Pesticides are synthetic toxic chemicals with ecological repercussions. Mostly organic toxins are non-biodegradable and water-insoluble. They are transferred from the lower tropic level to higher tropic level because they are highly persistent. Over time, the concentration of toxins in higher animals increases and cause serious metabolic and physiological disorders.They enter into food chain and hence possess potential harms for the human consumption. 

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