Which of the following descriptions best describes the biosphere? Responses The biosphere includes regions of earth's surface, mantle, outer core, and inner core. The biosphere includes regions of earth's surface, mantle, outer core, and inner core. The biosphere includes regions of earth's surface, the hydrosphere, and the lower atmosphere occupied by living organisms. The biosphere includes regions of earth's surface, the hydrosphere, and the lower atmosphere occupied by living organisms. The biosphere includes the geosphere and atmosphere. The biosphere includes the geosphere and atmosphere. The biosphere includes all non living things on planet earth.