recap the photosynthesis process...

pho·to·syn·the·sis (fō'tō-sĭn'thĭ-sĭs) n.
The process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source. Most forms of photosynthesis release oxygen as a byproduct.
pho'to·syn·thet'ic (-sĭn-thět'ĭk) adj., pho'to·syn·thet'i·cal·ly
adv.

Source:
The American Heritage® Dictionary of the English Language, Fourth EditionCopyright © 2006 by Houghton Mifflin Company.Published by Houghton Mifflin Company. All rights reserved.