| Answer | Crossword Clue |
|---|---|
| ultrabasics | ULTRABASIC, a rock very poor in silica |
| Answer | Crossword Clue |
|---|---|
| ultrabasics | ULTRABASIC, a rock very poor in silica |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.