Assertion: invertebrate's skeleton | /r/MadeOf | various materials
Facets:
Source sentences:
text: Invertebrates do not have bony skeletons like vertebrates, however, many have an internal or external skeleton of some sort which is made from various materials.
text: Invertebrates do not have bony skeletons like vertebrates, however, many have an internal or external skeleton of some sort which is made from various materials.