Assertion: boron | /r/HasProperty | necessary
Facets:
value: as a trace element
type: MANNER
Source sentences:
text: The evidence includes deprivation studies showing that boron is necessary for some higher animals to complete their life cycle (eg, frogs,Fort 1999, Fort 2002 zebrafish).Rowe 1999
text: It is not believed to be required by animal life, but it might be necessary as a trace element for building muscle and bone.
text: Boron is necessary for: