About: http://webisa.webdatacommons.org/257179519

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	2. ???On the early earth, it is likely that greenhouse gases such as carbon dioxide and methane were commoner than they are today.??? Historical speculation, not science.
http://www.w3.org/ns/prov#wasQuotedFrom	defendingcontending.com