Limitations on prebiological synthesis.
D000596:Amino Acids / Q000138:chemical synthesis; D005075:Biological Evolution; D055598:Chemical Phenomena; D002621:Chemistry; D003486:Cyanides / Q000138:chemical synthesis; D004560:Electricity; D005557:Formaldehyde / Q000138:chemical synthesis; D008660:Metabolism; D008962:Models, Theoretical; D010710:Phosphates / Q000138:chemical synthesis; D010788:Photosynthesis; D013472:Sunlight; D013696:Temperature; D014466:Ultraviolet Rays
D000596:Amino Acids; D003486:Cyanides; D010710:Phosphates; D005557:Formaldehyde