Biosphere is a term used to describe the total living organisms on Earth, from microorganisms to the largest creatures. It is a relatively thin layer of the Earths surface that supports life, reaching from a few kilometers into the atmosphere to deep-sea vents. The biosphere is the zone where the lithosphere, the hydrosphere, and the atmosphere interact. It is defined as the region on, above, and below the Earths surface where life exists. The biosphere includes all forms of life on Earth as well as all habitats capable of sustaining life. The biosphere is made up of the parts of Earth where life exists, including all ecosystems. The biosphere is also known as the ecosphere and is the sum of all ecosystems. The importance of the biosphere lies in the fact that it plays a critical role in the maintenance of ecosystems. Even a minor change in the biosphere can cause a large impact on the lives of living organisms.