Biosphere
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The biosphere includes everything living on Earth, including humans, animals, plants,and insects. In other words, it's everything that is alive on the earth. Currently the biosphere has a biomass (or amount of living things) at around 1900 gigatonnes of carbon. It is not certain exactly how thick the biosphere is, though scientists predict that it is somewhere around 12,500 meters. It is also the highest level of organization