| Answer | Crossword Clue |
|---|---|
| BIOME | Region of life |
| BIOTA | Life of a region |
| ORNIS | Bird life of a region |
| ORNIS | Bird life of a region. |
| BIOTA | Natural life of a region |
| ZOOLOGY | Animal life of a particular region |
| BIOTA | Animal and plant life of a region. |
| BIOTA | Plant and animal life of a region. |
| BIOTA | Plant and animal life in a region. |
