| Answer | Crossword Clue |
|---|---|
| ALK | Mineral salt in soils: Abbr. |
| ALKALI | Mineral salt in some soils. |
| ALK | Mineral Salt: Abbr. |
| NATRON | Mineral in salt lakes. |
| NATRON | Mineral found in salt lakes. |
| ALKALI | Mineral salt found in arid soil. |
| NATRON | Mineral salt found in dry lake beds |
