Photosynthesis is the process by which plants (and some other organisms such as algae and photosynthetic protists) use light energy, carbon dioxide, and water, to generate simple sugars. Oxygen is released as a waste product during photosynthesis. This process takes place in organelles called chloroplasts. The overall reaction may be summarized by the chemical equation 6CO2 + 6H2O (+ light) → C6H12O6 + 6O2.

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