Decades: 1160s 1170s 1180s 1190s 1200s - 1210s - 1220s 1230s 1240s 1250s 1260s
Years: 1209 1210 1211 1212 1213 - 1214 - 1215 1216 1217 1218 1219
Deaths
... various activities along the way as the electron drops in energy level. The electrons originate when a photon of sunlight strikes a chlorophyll molecule contained ...