Question

How did the banned substances DDT and PBCs end up in the ocean?

Answer 1

Explanation:

Animal and fatty foods contain the highest levels of DDT and PCBs because they are stored in fat and increase in concentration as they move up the food chain. ... PCBs and DDT build up in sediment in rivers, lakes, and coastal areas, then accumulate in fish.

Answer 2

Answer:

Animal and fatty food contain the highest

level of DDT and PCBs because they are

stored in fats and increase is concentration

as they move up the food chain.....PCBs and

DDT build up and sediment in rivers,lakes,

and coastel areas then a accumulate

in fish.

hope it helps you ☺️