| Answer | Crossword Clue |
|---|---|
| OXYGEN | Roughly 21% of the atmosphere |
| OXYGEN | About 21% of the atmosphere |
| ARGON | Roughly 1% of the atmosphere |
| ARGON | Roughly 1% of the earth's atmosphere |
| AIR | It's roughly 21% oxygen |
| Answer | Crossword Clue |
|---|---|
| OXYGEN | Roughly 21% of the atmosphere |
| OXYGEN | About 21% of the atmosphere |
| ARGON | Roughly 1% of the atmosphere |
| ARGON | Roughly 1% of the earth's atmosphere |
| AIR | It's roughly 21% oxygen |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.