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Why is light important for living organisms?

 

Virtually all life depends on the availability of light, which powers photosynthesis (the process of synthesizing energy). Light travels in waves, and its energy is contained in packets called photons. The energy of a photon is inversely proportional to the wavelength of the light-the longer the wavelength, the less energy per photon. Sunlight consists of a spectrum of colors present in light.

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