A biome is a distinct ecosystem in an area, and can be differentiated from other biomes by its climate and location. All organisms in a biome affect each other. Biomes consist of both their living (biotic) and non-living (abiotic) components. 

A biome is another term for an ecosystem.  It is defined as a community of various plants and animals that inhabit a particular type of geographic region of Earth.  Biomes are often defined by their climate, rainfall/water characteristics, elevation, and plant characteristics (leaf type, spacing, etc).  Biomes can be divided into two major classifications, terrestrial (land-based) and aquatic (water-based).  Some major terrestrial biomes include tundra, desert, rain forest, boreal coniferous forest, and temperate deciduous forest.  Some major aquatic biomes include lentic freshwater, lotic freshwater, wetlands, open ocean, estuary, and continental shelf water.