Assertion: insect's exoskeleton | /r/HasProperty | external
Facets:
Source sentences:
text: All the insects have an external exoskeleton, and the body is divided into three major segments: head, thorax, and abdomen.
text: Like other insects, ants have an exoskeleton, an external covering that provides a protective casing around the body and a point of attachment for muscles, in contrast to the internal skeletons of humans and other vertebrates.