Across
- 2. Metal toxic in high amounts, symbol Pb (4)
- 4. Essential metal for nerve function (8)
- 5. Heavy metal causing Minamata disease (7)
- 7. Essential metal in hemoglobin (4)
- 8. Metal needed for enzyme function (4)
- 9. Trace metal needed for insulin function (5)
Down
- 1. Metal found in chlorophyll (9)
- 2. Metal used in batteries, harmful in excess (6)
- 3. Metal that can contaminate water and soil (6)
- 6. Metal important for bone health (7)