Question

ddt lasts a long time in the environment. it can magnify up the food chain, which means if a small animal eats something with ddt, then a larger animal eats small animals with ddt, there will be even more ddt in the larger animal. what is the term that we use to describe this phenomenon? biomagnification eutrophication

Explanation:

Biomagnification is the process where a substance (like DDT) increases in concentration as it moves up the food chain. Eutrophication is about nutrient - rich water causing algal blooms, not related to this DDT - food chain concentration increase.

Answer:

Biomagnification