BIOME
| Date | Clue |
|---|---|
| 2025-10-10 | Ecological community |
| 2025-07-27 | Tundra or taiga |
| 2024-07-15 | Desert or tundra |
| 2023-07-19 | Desert or tundra |
| 2022-04-10 | Tundra or savanna |
| 2020-10-10 | Tundra, e.g. |
| 2020-04-11 | Forest, e.g. |
| 2018-11-15 | Wetland or rain forest |
| 2010-12-19 | Tundra or wetland |
| 2010-05-25 | Community of plant and animal life |
| 2009-03-01 | Major ecological community |
| 2006-12-16 | Tundra or rain forest |
| 2003-07-05 | Community of plant and animal life |
| 2001-02-14 | Ecological community |
| 2001-02-04 | Ecological community |
| 1998-03-14 | Complex ecologic community |