Flexi Says: A population is a group of organisms belonging to the same species that live in the same area and interact with one another. An ecosystem includes the living organisms (all the populations) in an area and the non-living aspects of the environment (Figure below). An ecosystem is made of the biotic and abiotic factors in an area. The biosphere is the part of the planet with living organisms (Figure below). The biosphere includes most of Earth, including part of the oceans and the atmosphere.
