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How long does it decompose depend on the specific chemical makeup of the plastic. Some plastics have weaker chemical bonds and thus do not take as long to biodegrade. Some plastics, however, have bonds that are so strong that they would not break down easily even over long periods of time--in some cases, forever isn't an exaggeration.

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13y ago
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14y ago

most plastics break down faster in the presence of sunlight with the exception of some UV resistant plastics if you left it in the sun i would venture to guess that it would last about 7 years but if it was burred(in a the dirt) i would guess well over 100 years but if it was in a land fill i think that some of the acids and chemicals created by the decay of organic materials (ex banana peals and the like) i think it may speed the proses i think but it raises the questions that after it is broken down is the chemicals that make up the plastic still there.... a fun story i once seen a plastic 5 gallon pail ant it was half under ground and half in the sun after about 3 years the in the sun part was very brittle ad crumbly you could crush it wit your figures but the burred part was still in new condition. i hope this helps but i am not a professional in plastics i base this on observation

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Q: How long does plastic silverware take to break down?
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