11. A type of boundary is the " ecotone ", or the transitional zone between two communities. 12. The PTZ represents the transitional zone between the extensional and compressional environments along the Manila Trench. 13. In the south, this is Guinean savanna, a transitional zone between Cameroon's forested south and desert north. 14. The Rolling Plains and the Edwards Plateau subregions act as transitional zones between eastern and western Texas. 15. The area is a transitional zone between semi desert, savanna, and shrubland and receives less than annual rainfall. 16. Meanwhile, the outer defenses were gradually moved inward, thereby sacrificing a vital foothold in the steppe transitional zone . 17. Mangrove trees are well adapted to the transitional zone of brackish water where fresh and salt water meet. 18. Situated between 11?'and 13?'north latitude, the Sudan-Sahel region is a transitional zone with regards to rainfall and temperature. 19. He engaged in a large amount of research on woodland in the transitional zone between subalpine and alpine habitats. 20. Nine interconnected props attach the kinetosome to the plasmalemma, and a terminal plate is present in the transitional zone .
