Assertion: salt marsh | /r/CapableOf | act as natural purifiers
Facets:
value: by sediment
type: OTHER
value: by absorbing excess nutrients
type: MANNER
value: by filtering pollutants
type: MANNER
Source sentences:
text: Salt marshes also act as natural purifiers by filtering pollutants and sediment and by absorbing excess nutrients from streams, rivers, and surface runoff before they can reach coastal waters and drinking water supplies.