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600 bytes added ,  05:24, August 14, 2008
biological process in plants
The '''Calvin cycle''' is a 10-step cycle involved in the sunlight-harnessing process of [[photosynthesis]]. It proceeds in a clockwise fashion, from the sunlight as it infuses the photosynthetic [[chlorophyll]] with [[photon]]s, through the addition of [[water]] and [[nitrogen]], to the release of lots of energy and [[oxygen]] into the air. The [[enzyme]] rubisco plays an important role, as does [[carbon dioxide]], which become replaced with oxygen at the end of the cycle. Plants execute the Calvin cycle daily, even on cloudy days, in order to survive.

[[Category:Plants]][[Category:Biology]]
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