The portion of the earth that supports the existence of living things is the

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

Tsunami if that’s what you are asking?

Metabolically active means that there are a series of enzyme-catalysed reactions occurring in cells, known as metabolic pathways. liver cells, or hepatocytes, are very metabolically active.