| Answer | Crossword Clue |
|---|---|
| PASSAGES | Migrations. |
| TREKS | Migrations. |
| TREKS | Migrations |
| TREKS | Some migrations |
| RUNS | Fish migrations |
| lemming | small arctic rodent noted for periodic mass migrations and mass drownings |
| lemmings | small arctic rodent noted for periodic mass migrations and mass drownings |
| phenology | the science dealing with the influence of climate on the recurrence of such annual phenomena of animal and plant life as budding and bird migrations. |
