<http://webisa.webdatacommons.org/75618119>	<http://www.w3.org/ns/prov#value>	"While high concentrations can be harmful, low concentrations of some heavy metals such as copper and zinc are essential trace (or micro-nutrient) elements for life processes." .
<http://webisa.webdatacommons.org/75618119>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/122776853>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/75618119> .
<http://webisa.webdatacommons.org/prov/94709225>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/75618119> .
<http://webisa.webdatacommons.org/75618119>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<tamu.edu> .