Recycling - the process of treating things that have already been used so that they can be used againRecycling, Catalyst - a substance that makes a chemical reaction happen faster without being changed itself, Waste - materials that are no longer needed and are thrown away, Efficient - doing something in a good, careful and complete way with no waste of time, money or energy, single-use - made to be used once only and then thrown away, polyolefins - any of a group of thermoplastic, stiff, light, and hard polymers obtained from the polymerization of simple olefins like propylene, used for injection molding, mostly in the automotive and appliance industries, manufactured - the making of goods or wares by manual labor or by machinery, especially on a large scale, stable - unchanging and resistant to decomposition or chemical reactions, contaminate - to make a substance or place dirty or no longer pure by adding a substance that is dangerous or carries disease, upcycled - items have already been used and then made into something of greater quality or value than the original item,

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