Assertion: scorpion's exoskeleton | /r/MadeOf | chitin
Facets:
Source sentences:
text: Scorpions have an exoskeleton (external skeleton) made of chitin, a tough, protective, flexible molecule made of polysaccharide and nitrogen.
text: Scorpions have an exoskeleton (outside skeleton) made of chitin, a sturdy, defensive, adaptable particle made of polysaccharide and nitrogen.
text: They have an exoskeleton that is made of chitin.
text: They all have an exoskeleton made of chitin.