Assertion: cicada's exoskeleton | /r/HasProperty | rigid
Facets:
Source sentences:
text: Since exoskeletons are rigid, they present some limits to growth.
text: It is commonly said that ecdysis is necessary because the exoskeleton is rigid and cannot grow like skin, but this is simplistic, ignoring the fact that most Arthropoda with soft, flexible skins also undergo ecdysis.
text: Since exoskeletons are rigid, they present some limits to growth.