Assertion: carbon dioxide | /r/CapableOf | vent by active volcanoes
Facets:
value: passively
type: MANNER
Source sentences:
text: [CO2 passively vented by active volcanoes]: Extrapolation of the measured 6.4 Mt/yr of CO2 emitted from the flanks of 30 historically active volcanoes to all 550 historically active volcanoes produces a global emission rate of 117 Mt/yr.