| urine | 0.52 |
| cosmetic | 0.40 |
| human body | 0.38 |
| the skin | 0.38 |
| exist in healthy cell | 0.58 |
| serve important role | 0.53 |
| come into contact | 0.38 |
| increase water-binding … | 0.36 |
| bind water | 0.36 |
| pass in the urine | 0.29 |
| give off ammonia | 0.29 |
| build up in the body | 0.29 |
| denature protein | 0.25 |
| dissolve intercellular … | 0.25 |
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| high solubility | 0.25 |
| soluble | 0.55 |
| toxic | 0.44 |
| cheap | 0.35 |
| effective | 0.33 |
| synthetic | 0.33 |
| less toxic | 0.25 |
| concentrated | 0.21 |
| unstable | 0.16 |
| organic compound | 0.63 |
| molecule | 0.40 |
| produced | 0.84 |
| used as fertilizer | 0.75 |
| excreted in urine | 0.72 |
| formed in the liver | 0.65 |
| removed | 0.56 |
| added | 0.55 |
| removed by kidney | 0.52 |
| converted to ammonium | 0.49 |
| dissolved in water | 0.49 |
| converted to ammonia | 0.43 |
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