| 11. | The zinc oxide, along with the slag, became a waste product.
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| 12. | This allowed him to turn a waste product into a source of income.
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| 13. | Urea is usually excreted as a waste product from the kidneys.
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| 14. | "I knew I didn't want to be a waste product, " he said.
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| 15. | Such chemistry would be " greener, " producing fewer waste products.
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| 16. | The main waste product of salinity gradient technology is brackish water.
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| 17. | Waste products were simply buried, burned or dumped untreated into waterways.
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| 18. | The oxygen gas made here is the waste product of photosynthesis.
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| 19. | One measured levels of creatinine, a waste product normally cleared by the kidneys.
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| 20. | W " D Flooring also claims to produce zero waste product.
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