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Noun: biosphere  'bI-ow,sfeer or 'bI-u,sfeer
  1. The regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist
    - ecosphere
     
  2. An artificial enclosed ecosystem, typically in a large sealed building

Derived forms: biospheres

Type of: part, region

Part of: major planet, planet

Encyclopedia: Biosphere

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