Answer:
As given below.
Explanation:
1. herbivores.
2. By all the types of organisms living in the same place.
3. Abiotic factors.
4. the hardwood trees to shrubs and softwood trees then to mosses.
5. From lichens to grass to shrubs and trees.
6. sustainability of the ecosystems is increasing more in protected areas.
7. the erosion of topsoil, leading to decreased crop production.
8. an increase in food supplies and better access to clean water.
9. emigration
10. will not limit any kind of possibilities for future generations.
11. It is the amount of land needed for a crop.
12. clearcutting
13. to create the soil.
14. threatened.
15. clumped