| Answer | Crossword Clue |
|---|---|
| ECOTONE | Plant transition zone |
| ECOTONE | Transition zone between plant communities |
| ECOTONE | Transition zone between two plant communities |
| ecotones | the transition zone between two different plant communities, as that between forest and prairie |
| ecotone | the transition zone between two different plant communities, as that between forest and prairie |
| ecotonal | the transition zone between two different plant communities, as that between forest and prairie |
