Across
- 2. — natural home of plants and animals
- 4. — long-term weather of a region
- 6. — remains of ancient organisms
- 7. — species living only in one region
- 8. — protected natural area
- 9. — land surrounded by mountains
Down
- 1. — large open area with grass
- 3. — species surviving from earlier geological times
- 5. — land covered by water
- 6. — area dominated by trees