The primary green pigment in leaves is chlorophyll. The synthesis of chlorophyll in plants requires sunlight and warm temperatures. When sunlight falls on a leaf, chlorophyll molecules absorb the red and blue wavelengths of light and reflect back green wavelengths of light, thus making leaves appear green. Chlorophyll absorbs the energy from sunlight and supplies the energy needed for photosynthesis, a chemical reaction that transforms carbon dioxide and water into oxygen and carbohydrates


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