About: http://webisa.webdatacommons.org/87943567

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	Since carbon dioxide is a well known greenhouse gas, whose presence in the atmosphere traps heat near the earth's surface, its lower concentration in the glacial atmosphere could have contributed to the cold climate of the ice ages.
http://www.w3.org/ns/prov#wasQuotedFrom	questia.com