| Answer | Crossword Clue |
|---|---|
| SMOG | Pollutant containing nitrogen dioxide |
| INERTS | Nitrogen and carbon dioxide |
| Answer | Crossword Clue |
|---|---|
| SMOG | Pollutant containing nitrogen dioxide |
| INERTS | Nitrogen and carbon dioxide |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.