Assertion: bull shark | /r/CapableOf | show reduced concentration of urea
Facets:
value: significantly
type: MANNER
value: within their blood
type: LOCATION
Source sentences:
text: Elasmobranchs' ability to enter fresh water is limited because their blood is normally at least as salty (in terms of osmotic strength) as seawater through the accumulation of urea and trimethylamine oxide, but bull sharks living in fresh water show a significantly reduced concentration of urea within their blood.