[ek-oh-sfeer, ee-koh-]
Ecosphere has several different meanings:

  • In ecology the term ecosphere can refer to the global ecosystem of the planet (essentially the same as biosphere).
  • In astronomy an ecosphere is an imaginary shell of space surrounding stars where conditions are such that life might survive. See habitable zone.
  • Ecosphere (science) is a closed ecosystem useful for learning about ecology, available as a novelty gift, such as a terrarium

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