title: Biogeochemistry: early options in photosynthesis.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Beukes
mesh_terms: D000818:Animals; D037421:Anthozoa; D005075:Biological Evolution; D002244:Carbon / Q000378:metabolism; D005580:Fossils; D019015:Geologic Sediments / Q000737:chemistry* / Q000382:microbiology*; D007501:Iron / Q000378:metabolism; D008954:Models, Biological; D009792:Oceans and Seas; D000069497:Origin of Life; D010788:Photosynthesis; D013019:South Africa; D013997:Time Factors; D014872:Water Movements
chemical_list: D002244:Carbon; D007501:Iron