Biosphere
[BI-ə-sfeer]
Part of speech: noun
Origin: German, 19th century
1.
The regions of the surface, atmosphere, and hydrosphere of the Earth (or analogous parts of other planets) occupied by living organisms.
Examples of Biosphere in a sentence
"Humanity in the 21st century is far more aware of its effects on the biosphere than at any previous point in history."
"Nathan’s concern for the future of the biosphere led him to study environmental sciences."
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