Ecosphere Definition
 ēkō-sfîr, ĕkō- 
    noun
  
 The zone of the earth, a planet, a star, etc. which contains or is theoretically capable of containing living organisms; specif., the biosphere.
Webster's New World 
The portion of the atmosphere from sea-level to about 4000 meters in which it is possible to breathe without technological assistance.
Wiktionary 
The biosphere.
Wiktionary 
Other Word Forms of Ecosphere
Noun
Singular:
 ecospherePlural:
 ecospheresEcosphere Is Also Mentioned In
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