About: http://webisa.webdatacommons.org/21953686

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	Which of the following is a trace element that is required by humans and other vertebrates, but not by other organisms such as bacteria or plants? ???
http://www.w3.org/ns/prov#wasQuotedFrom	quizlet.com