About: http://webisa.webdatacommons.org/318599173

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	A study by G. Sposito included in Sigel's Metal Ions in Biological Systems shows that mercury and copper are the most toxic of heavy metals to Algae, fungi and fish; for plants it is mercury, lead, then copper.
http://www.w3.org/ns/prov#wasQuotedFrom	tropicalfishkeeping.com