Decades: 1200s 1210s 1220s 1230s 1240s - 1250s - 1260s 1270s 1280s 1290s 1300s
Years: 1247 1248 1249 1250 1251 - 1252 - 1253 1254 1255 1256 1257
Births
Deaths
... pathways with many important intermediates. Photosynthesis has two distinct stages, called the light reaction and carbon fixation[?], which typically occurs via the ...