Is certain dead plants biotic or abiotic ?

Biotic since a plant was once a living thing. Abiotic is sunlight, soil etc.

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

Scans the skeleton into a facial reconstruction software.