| Answer | Crossword Clue |
|---|---|
| METHANE | Swamp gas, essentially |
| MIASMA | Swamp gas |
| METHANE | Swamp gas, mostly |
| UFO | It may be produced by swamp gas |
| UFO | It could be created by swamp gas |
| METHANE | Marsh gas, essentially |
| Answer | Crossword Clue |
|---|---|
| METHANE | Swamp gas, essentially |
| MIASMA | Swamp gas |
| METHANE | Swamp gas, mostly |
| UFO | It may be produced by swamp gas |
| UFO | It could be created by swamp gas |
| METHANE | Marsh gas, essentially |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.