No, because it depends on how it's breaking down. If you have one cohesive sheet of plastic, it would be wrong to say that you have trillions of nanoparticles o

No, because it depends on how it's breaking down. If you have one cohesive sheet of plastic, it would be wrong to say that you have trillions of nanoparticles of plastic. The concerns with plastics that break up into many smaller pieces and enter the body and wider ecosystem are different (and potentially worse) than the concerns of the impacts of a single macro piece.