Assertion: sponge's skeleton | /r/MadeOf | silica
Facets:
value: entirely
type: DEGREE
Source sentences:
text: The name Venus’s flower basket derives from the sponges’ delicate, white, latticelike skeletons made of silica.
text: The skeleton is made of lime or silicon.
text: Glass sponges have skeletons made of silica, which is the same material used to make glass, but glass sponges are not glass, per se.
text: The name Venus’s flower basket derives from the sponges’ delicate, white, latticelike skeletons made of silica.
text: The name Venus’s flower basket derives from the sponges’ delicate, white, latticelike skeletons made of silica.
text: The skeleton of an hexactinellid is made entirely of silica.
text: Sponge reefs are reefs formed by Hexactinellid sponges, which have a skeleton made of silica, and are often referred to as glass sponges.