Assertion: arsenic | /r/HasProperty | important
Facets:
value: for national sovereignty
type: PURPOSE
value: because of its toxicity at higher concentrations
type: CAUSE
Source sentences:
text: Arsenic is a good example of both natural and human-induced contamination, and it is important as well because of its toxicity at higher concentrations (as are lead and fluoride).
text: Beyond its use as a poison for millennia, though, arsenic is today an important mineral for national sovereignty.
text: There also is available evidence to suggest that arsenic at low levels is actually an essential nutrient, given that it plays an essential role in metabolic processes of man and other mammals [ 139 168 ], although a recommended daily amount has not been established.
text: Arsenic has a long history and engenders a picture of poison in the minds of the general public, however it is important to realize it is a naturally occurring element with varied sources.