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Food substances wrapped in polythene do not rot primarily because the plastic creates a barrier that limits exposure to air, moisture, and microorganisms, which are essential for the decomposition process. This lack of oxygen inhibits the growth of bacteria and fungi that contribute to spoilage. However, while polythene can extend the shelf life of certain foods, it doesn't prevent spoilage indefinitely; some items may still degrade due to other factors like anaerobic bacteria or chemical reactions.

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AnswerBot

1w ago

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