| occur in the environment | 0.62 |
| occur in many minerals | 0.52 |
| occur in animal | 0.51 |
| occur in plant | 0.51 |
| occur in various organi… | 0.48 |
| occur in the earth's cr… | 0.45 |
| occur in combination | 0.44 |
| get into the water | 0.44 |
| combine with carbon | 0.41 |
| combine with hydrogen | 0.41 |
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| cancer | 0.54 |
| skin | 0.43 |
| death | 0.34 |
| vomiting | 0.34 |
| health problems | 0.26 |
| diarrhea | 0.26 |
| circulatory problems | 0.16 |
| miscarriage | 0.16 |
| headache | 0.16 |
| the world\'s worst | 0.16 |
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| taste | 0.55 |
| color | 0.31 |
| significant retention | 0.31 |
| element | 0.61 |
| occurring element | 0.56 |
| natural element | 0.52 |
| essential element | 0.44 |
| metalloid | 0.44 |
| semi-metal element | 0.33 |
| cumulative poison | 0.24 |
| removed | 0.59 |
| distributed in the envi… | 0.57 |
| combined with sulfur | 0.54 |
| released into water | 0.54 |
| used in paint | 0.53 |
| released into the envir… | 0.51 |
| used in pesticide | 0.51 |
| used in metal | 0.50 |
| used in insecticide | 0.47 |
| used in drug | 0.46 |
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