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3. To protect the food plants from insects, an insecticide was sprayed in small amounts but it was detected in high concentration in human beings. How did

it happen?


This is called Biomagnefication.When some small amounts of non degradable chemicals enter into a food chain then they get accumulated and get concentrated in large amounts at higher tropic levels.Since humans are the last tropic level i.e they eat plants , these chemicals get accumulated in large amounts in their bodies.hope it helped you
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