Which of the following is the correct equation for photosynthesis? a.) CO2 + light + H2O --> O2 + Sugar
b.) CO2 + sugar + H2O --> O2 + light
c.) O2 + light + H2O --> CO2 + Sugar
d.) CO2 + O2 + H2O --> Light+ Sugar

a

Explanation: light is a energy sourse for the photosintesis and sugar is glucose  wich is the food formd at the end of phothosintesis like oxigen..(etc..)

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

synapse nervous system