Meaning of Oxygen Revolution | Babel Free
Definitions
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A phenomenon in which a sustained increase in oxygen is observed. uncountable, usually
- Synonym of Great Oxygenation Event.
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A fundamental or revolutionary change involving oxygen. uncountable, usually
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.