title: Evolutionary options.
authors.forename: J A
authors.initials: JA
authors.lastname: Raven
mesh_terms: D001272:Atmosphere; D005075:Biological Evolution; D002245:Carbon Dioxide / Q000378:metabolism; D010788:Photosynthesis; D010944:Plants / Q000201:enzymology / Q000378:metabolism*; D012273:Ribulose-Bisphosphate Carboxylase / Q000378:metabolism
chemical_list: D002245:Carbon Dioxide; D012273:Ribulose-Bisphosphate Carboxylase