Assertion: coral reef | /r/CreatedBy | millions of tiny polyps
Facets:
Source sentences:
text: Coral reefs are therefore created by millions of tiny polyps forming large calcium carbonate structures, and are the basis of a framework and home for hundreds of thousands of species.
text: Coral reefs are therefore created by millions of tiny polyps forming large carbonate structures, and are the basis of a framework and home for hundreds of thousands, if not millions, of other species.