The discovery of pcbs led to a ban on commercial fishing on the river because the chemicals were so concentrated in the flesh of fish.

The discovery of PCBs led to a ban on commercial fishing on the Hudson River because the chemicals were so concentrated in the flesh of fish.
Commercial fishing is the enterprise of catching fish and other seafood for commercial profit, often from wild fisheries.

Volcanoes make new rocks so not ahotspots are the the stuff that makes volcanoes mid atlantic ridge(mar cause i’m lazy) is a constructive plate boundary so it makes sense that new rocks would be found near it, also the mar is in the middle of the ocean so it fits the description deep ocean trench, umm, there’s no ocean trenches to where you’re goingso the mar is most likely the answeri wouldn’t trust me but hey why not

Sorry i dont under stand can you rephase that