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Microplastics found in up to 90% of salt world-wide
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2019-11-13 at 5:03 PM UTC
Originally posted by Cly Speak of plastic, where does it go? Does it get absorbed at subversive plate boundaries or what?
It forms a part of the carbon cycle. Eventually it burns or is digested or is hit by UV light and returns to the atmosphere for plants to sequester. Or maybe it just lies around forever, like most carbon.
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2019-11-13 at 5:06 PM UTC
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2019-11-13 at 5:10 PM UTC
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2019-11-13 at 5:17 PM UTC
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2019-11-13 at 5:22 PM UTCIt does go in the mantle.
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2019-11-13 at 5:25 PM UTC
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2019-11-13 at 5:27 PM UTC
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2019-11-13 at 5:28 PM UTC
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2019-11-13 at 5:36 PM UTC
Originally posted by ORACLE That's not really a question with any single answer, just imagine it is like dust, it will get in everything and stay in circulation until perchance it hits a process that removes it without reintroduction. Such as subduction. But I doubt it. Many plastics contain air molecules in their porous interior, and a bit of water in their porous exterior and it usually makes it a little less dense than water overall. So in net they can rise rather than fall. Although there are other factors at play.
No, the plastic would degrade and sink. -
2019-11-13 at 5:39 PM UTC
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2019-11-13 at 5:39 PM UTC
Originally posted by Cly Well then, where does it go?
Read above. It's like asking "where does dust go?" Nowhere specific. It just hangs out in the water until it's removed by some process. Subduction could be part of that for sure. But that is a RIDICULOUSLY slow process that takes place on geological timescales. No, it's not gonna remove a significant amount of plastics. -
2019-11-13 at 5:40 PM UTC