Archaeology is a discipline that was virtually unknown until the 19th century. Archaeology, originally an amateur pastime, is becoming increasingly popular, and it is now possible for archaeologists to become minor celebrities as a result of media exposure.
... chemical reaction of photosynthesis is:
6H2O + 6CO2 + light → C6H12O6 (glucose) + 6O2
In simple English terms, this is carbon dioxide plus water plus light ...