| Answer | Crossword Clue |
|---|---|
| NITROGEN | Primary constituent of air |
| miners | process for obtaining a natural constituent mine the air for nitrogen |
| Answer | Crossword Clue |
|---|---|
| NITROGEN | Primary constituent of air |
| miners | process for obtaining a natural constituent mine the air for nitrogen |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.