Assertion: horseshoe crab's blood | /r/CapableOf | use iron-based hemoglobin
Facets:
value: to transport oxygen
type: PURPOSE
Source sentences:
text: Whereas our blood uses iron-based hemoglobin to transport oxygen throughout the body, horseshoe crabs rely on hemocyanin, which contains copper.
text: Whereas our blood uses iron-based hemoglobin to transport oxygen throughout the body, horseshoe crabs rely on hemocyanin, which contains copper.