Which one of the following is one of the characteristics of a...

Stratification is the characteristic of biological community. Stratification is the vertical layering or the phenomenon of having more than one stratum including formed by different plants/organisms in the same place. A forest may have 5-7 strata including large or canopy trees, medium tees, short trees, shrubs, herbs, ground flora etc. Stratification is useful as it can accommodate a large number of organisms of different types and more efficient use of resources. The animals that occupy such similar strata or ecological niches although geographically separated, are called ecological equivalents.