Assertion: coral reef | /r/CapableOf | comprise an area of almost 300 000 km²
Facets:
value: altogether
type: DEGREE
Source sentences:
text: Altogether, coral reefs comprise an area of almost 300 000 km² and are estimated to have an economic value of US$100 000 - 600 000 per km², thus providing one of the most high-value ecosystems.