IIRC life on a planet would not be possible without seismic activity. Some key element cycles (phosphorus? nitrogen? Not sure) depend on it?
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life as we know it needs continuous replenishing of hydrogen, oxygen, nitrogen, phosphorus and sulfur
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which ones need seismic activity? Can't find the book where I first read about this
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oh & carbon too! i believe seismic activity replenishes and/or recycles all en.wikipedia.org/wiki/CHON
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here are a couple reference articles that may help theconversation.com/how-the-air-we astrobio.net/news-exclusive
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