describe the reaction of photosynthesis.
Check these sites.
http://www.johnkyrk.com/photosynthesis.html
http://www.pbs.org/wgbh/nova/methuselah/photosynthesis.html
http://www.johnkyrk.com/photosynthesis.html
http://www.pbs.org/wgbh/nova/methuselah/photosynthesis.html