Final answer:
Net photosynthesis is equal to photosynthesis - respiration. It is the difference between the rate of carbon fixation by photosynthesis and the respiration rate.
Step-by-step explanation:
Net photosynthesis is equal to photosynthesis - respiration. It is the difference between the rate of carbon fixation by photosynthesis and the respiration rate. This is because photosynthesis is the process by which plants convert carbon dioxide and water into glucose, while respiration is the process by which organisms break down glucose to release energy. The net photosynthetic production rate (NPP) is the amount of carbon fixed minus the amount used during cellular respiration.