Decades: 1160s 1170s 1180s 1190s 1200s - 1210s - 1220s 1230s 1240s 1250s 1260s
Years: 1213 1214 1215 1216 1217 - 1218 - 1219 1220 1221 1222 1223
Births
Deaths
... by using the O18 isotope of oxygen as a tracer label to follow the fate of oxygen atoms during photosynthesis. Light-dependant reaction The first stage of the ...