| Answer | Crossword Clue |
|---|---|
| SNOWLINE | In the Alps, it's about 9,000 ft. |
| SNOWLINE | 9,000 ft. in the Alps. |
| ecosphere | the part of the atmosphere in which it is possible to breathe normally without aid: the portion of the troposphere from sea level to an altitude of about 13,000 ft. (4000 m) |
| MTETNA | In Sicily it's about 10,920 ft. high |
