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An average time for a plastic bottle to biodegrade fully is approximately 450-1000 years. However, there are many different kinds of plastic in the world, most commonly the hard and reusable ones, which take a longer time, and the soft and non-reusable ones, which take a shorter time. Time also varies with the size of the bottle. If they are sitting in landfills sealed and compacted with all of the other trash and bottles with no air moving, they won't decompose at all.
a standard PETE plastic bottle will never rot.

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Wiki User

13y ago
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Wiki User

12y ago

It's hard to believe, but I found this out and it's true, but if a plastice bottle were around at the time of the dinosaurs, (65 million years), it would still be around today!

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Wiki User

11y ago

conventional plastic bottles do not decompose

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Anonymous

Lvl 1
3y ago

they do it just takes more than 500 years

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Q: How many years plastic bottles can be decompose?
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