Photosynthesis - leaf absorbs light energy and in this process it combines CO2 with water to form glucose and oxygen (given off as waste molecules)
CO2 + H2O ---> C6H12oO6 + O2 -> excretion
Respiration - glucose and oxygen (aerobic resp.) through enzyme reactions the glucose is broken down and forms ATP , water and carbon dioxide (as waste)
- Carbon dioxide is a metabolic waste - excretion
C6H12oO6 + O2 ---> ATP + CO2 + H2O
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