Homework Help: Quick science question #2

Posted by Stacie on Saturday, April 25, 2009 at 5:55pm.

Why are the reactions in the 1st and 2nd stages of photosynthesis called "light reactions."

Quick science question #2 - DrBob222, Saturday, April 25, 2009 at 6:04pm
Because sun light is needed to make the chemical reactions take place.
http://en.wikipedia.org/wiki/Light_reaction

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