Assertion: sea otter | /r/CapableOf | maintain the balance
Facets:
value: between sea urchins
type: OTHER
value: between kelp
type: LOCATION
value: in the food web
type: LOCATION
Source sentences:
text: Sea otters are a ‘keystone species’ within kelp forests, maintaining the balance in the food web between kelp and sea urchins, allowing the forests to thrive.