Biosphere

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The part of the earth that contains life is called biosphere. We can point out where is the lithosphere, what part is hydrosphere? From where to where is occupied by atmosphere? But we cannot easily define the location and expanse of the biosphere. Think this way something that got a life is constituent of a biosphere. There is no exact areas to be called biosphere. But most probably we can call biosphere for such small part that comprises like the little depth of the earth surface where you find earthworms, roots or any underground beings till up to several meters above the earth surface in the atmosphere where birds can freely live and the entire water body or hydrosphere where fishes and water plants like algae and all under water life forms.

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