photosynthesis

  

Definition

Natural chemical-process by which chlorophyll (magnesium-containing pigment in green plants, blue-green algae, phytoplankton, and green and purple bacteria) uses sunlight (radiation) energy to convert (synthesize) water and atmospheric carbon dioxide into life sustaining organic compounds such as glucose. Being also responsible for almost all the oxygen in atmosphere, photosynthesis is the basis of all life on earth.

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