Redirected from 689 BC
Decades: 730s BC 720s BC 710s BC 700s BC 690s BC - 680s BC - 670s BC 660s BC 650s BC 640s BC 630s BC
Significant People
... typical overall chemical reaction of photosynthesis is: 6H2O + 6CO2 + light → C6H12O6 (glucose) + 6O2 In simple English terms, this is carbon dioxide plus water ...