| Answer | Crossword Clue |
|---|---|
| BIOSPHERE | Life-supporting area of the Earth |
| OREL | Part of the Black Earth area. |
| SEA | Largest area on the earth. |
| OREL | City in the Black Earth area. |
| MORIA | Middle-earth area under the Misty Mountains |
| SERAL | Of the life cycle of an area, biogeographically. |
