| the earth's crust | 0.25 |
| enter the environment | 0.60 |
| occur as the mineral st… | 0.54 |
| melt at 630°c | 0.34 |
| boil at 1380°c | 0.30 |
| cause cancer | 0.29 |
| react with oxygen | 0.25 |
| exist in two forms | 0.25 |
| remain in the material | 0.25 |
| migrate out into food | 0.25 |
| leach into bottled water | 0.25 |
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| dizziness | 0.39 |
| depression | 0.39 |
| vomiting | 0.26 |
| slow andweak pulse | 0.25 |
| diarrhea | 0.22 |
| compound | 0.43 |
| a nourishing or conditi… | 0.25 |
| an electronegativity of… | 0.25 |
| a chemical element | 0.71 |
| metalloid | 0.38 |
| semimetallic chemical e… | 0.25 |
| mined | 0.67 |
| extracted | 0.56 |
| used in battery | 0.53 |
| produced as a by | 0.49 |
| used as catalyst | 0.43 |
| present in amount | 0.41 |
| used in glass | 0.38 |
| recognized in compound | 0.34 |
| used in paint | 0.34 |
| used in bullet | 0.34 |
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