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Meaning of hydrogen cycle | Babel Free

Noun CEFR B2

Definitions

the transmission of hydrogen from water to carbohydrates etc and back to water by living organisms
the electrolysis or solar photolysis of water to give hydrogen and oxygen which are then recombined in a fuel cell to produce electricity

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

hydrogen dioxide hydrogen disulfide hydrogen disulphide hydrogen economy hydrogen electrode hydrogen embrittlement