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The biosphere is defined as the part of earth which is habituated. The atmosphere consists of both the biotic and abiotic components. The biosphere is also known as living mantle. This idea came into function 100 year ago. It was rejected than and its importance was come to known recently. The Austrian geologist Eduar Suess played a vital role in this regard. The thickness of biosphere is around 22 and half a kilometer from the bottom of ocean and extends till the top of mountains. Some part of the biosphere are occupied more and some are less. The maximum density of the organisms occurs in the tropical rain forests along with the coral reef. The life on the live volcanoes does not exist. There are very few organisms which occur on the tundra region, in snow capped Himalayas, deserts and the hot springs.
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The biosphere is the global sum of all ecosystems. It can also be called the zone of life on Earth. From the broadest biophysiological point of view, the biosphere is the global ecological system integrating all living beings and their relationships, including their interaction with the elements of the lithosphere, hydrosphere, and atmosphere. This biosphere is postulated to have evolved, beginning through a process of biogenesis or biopoesis, at least some 3.5 billion years ago
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