| Answer | Crossword Clue |
|---|---|
| SUMATRA | One of the world's largest islands. |
| ARALSEA | Lake that was formerly one of the world's largest |
| MELINDAGATES | Cochair of one of the world's largest philanthropic foundations |
| ATOMSMASHER | The world's largest one straddles the border of France and Switzerland |
| RIO | Site of Floresta da Tijuca, one of the world's largest urban forests |
| OPAL | Olympic Australis is the world's largest one |
| OPAL | The Olympic Australis is the world's largest discovered one |
