Assertion: silica | /r/HasProperty | ubiquitous
Facets:
Source sentences:
text: This field of research is challenging because silica is ubiquitous and in most circumstances dissolves in trace quantities only.
text: In addition some recently noted exposures to crystalline silica include the following: Crystalline Silica and SilicosisCrystalline silica is a ubiquitous substance which is the basic component of sand, quartz and granite rock.