State and define the scientific term used for progressive accumulation of harmful chemicals at eachtrophic level of a food chain Share with your friends Share 7 Nishi Dwivedi answered this Biomagnification:It refers to the increase in the concentration of a substance with the increase in the trophic level. 10 View Full Answer Anjali Anna answered this biological magnification- Increase in concentration of harmful chemical substances in the body of living organisms at each tropic level of a food chain is called biological magnificationhope it helps:) 1 Pratik Karnik answered this Biomagnication or Ecological Amplification. 5