Assertion: circulatory system | /r/HasProperty | absent
Facets:
value: in some animals, including flatworms
type: OTHER
Source sentences:
text: Circulatory systems are absent in some animals, including flatworms.
text: Circulatory systems are absent in some animals, including flatworms (phylum Platyhelminthes).
text: Circulatory systems are absent in some animals, including flatworms.
text: Circulatory systems are absent in some animals, including flatworms (phylum Platyhelminthes).