Assertion: diatom | /r/CapableOf | play key role
Facets:
value: in the biogeochemical cycling of silica
type: LOCATION
value: in the global carbon cycle
type: LOCATION
Source sentences:
text: Diatoms occupy vast swaths of ocean and fresh water, where they play a key role in the global carbon cycle.
text: They also play a key role in the biogeochemical cycling of silica (84) owing to their requirement for this mineral for cell wall biogenesis.