Assertion: arthropod's exoskeleton | /r/HasProperty | useful
Facets:
value: as hard parts of organisms
type: OTHER
value: greatly
type: DEGREE
value: in assisting preservation of organisms
type: PURPOSE
Source sentences:
text: Exoskeletons, as hard parts of organisms, are greatly useful in assisting preservation of organisms, whose soft parts usually rot before they can be fossilized.