Species are a grouping of individuals resembling each other in important morphological, anatomical, and biochemical characters and can potentially interbreed. The population is an aggregation or grouping of individuals of the same species at the same time in a particular area.  The biotic community is an assemblage of interdependent, and the ecosystem is a self-sufficient and self-regulating segment of nature comprising of a biotic community and its physical environment, both interacting and exchanging materials.