Assertion: natural gas methane | /r/ObjectUse | used by methanotrophic bacteria
Facets:
value: as a substrate for carbon anabolism
type: PURPOSE
value: in unusual circumstances
type: OTHER
value: as both a source of electrons
type: MANNER
Source sentences:
text: In unusual circumstances, the gas methane can be used by methanotrophic bacteria as both a source of electrons and a substrate for carbon anabolism.