The origin of life.
D000162:Acoustics; D000596:Amino Acids / Q000032:analysis; D000641:Ammonia; D001272:Atmosphere; D005075:Biological Evolution; D002248:Carbon Monoxide; D005118:Extraterrestrial Environment; D005580:Fossils; D000069497:Origin of Life; D011687:Purines / Q000032:analysis; D011743:Pyrimidines / Q000032:analysis; D013816:Thermodynamics; D014867:Water
D000596:Amino Acids; D011687:Purines; D011743:Pyrimidines; D014867:Water; D000641:Ammonia; D002248:Carbon Monoxide