| Answer | Crossword Clue |
|---|---|
| ETNA | Its first recorded eruption was about 3500 years ago |
| EON | The Hadean was the first one, ending about 4 billion years ago |
| Answer | Crossword Clue |
|---|---|
| ETNA | Its first recorded eruption was about 3500 years ago |
| EON | The Hadean was the first one, ending about 4 billion years ago |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.