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When exposed to light, photosynthetic activity gives chlorophyll its characteristic bright green color; when light is not present the pigment has a much darker color.
 
When exposed to light, photosynthetic activity gives chlorophyll its characteristic bright green color; when light is not present the pigment has a much darker color.
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Scientists have been struggling for years to produce synthetic chlorophyll for improved panels for solar power, with only recent success.<ref>http://www.sciencedaily.com/releases/2007/04/070405171830.htm</ref>
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Scientists have been struggling for years to produce synthetic chlorophyll for improved panels for solar power, with only recent success.<ref>https://www.sciencedaily.com/releases/2007/04/070405171830.htm</ref>
    
==References==
 
==References==
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