The reason as to why some communities such as grasslands, may never really reach F.E. Clement's concept of climax stage because of the fact that the people living in those communities have adapted to periodic interruption. In which allowed them to be further away from Clement's concept of climax stage. In which the periodic interruption is the one responsible for making the ecological equilibrium from being vulnerable to change that it is impossible for them to adapt to the concept of the climax stage in which is very rare.