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: The [[leaf]] has a layer of [[Palisade Cell|palisade cells]] which have lots of [[chloroplast]]s inside for [[photosynthesis]].
: The [[leaf]] has [[Guard Cell|guard cells]] and [[Stoma|stomata]] which can open and close. This way if the [[leaf]] gets [[dehydrate]]d the [[stoma|stomata]] will close and stop [[Carbon Dioxide|carbon dioxide]] getting in, stopping [[photosynthesis]].
===Factors Affecting Photosynthesis===
*[[Light]] - The more [[light]], the faster [[photosynthesis]] can happen.
*[[Water]] - [[Photosynthesis]] needs [[water]]. If there is not enough [[water]] [[photosynthesis]] will slow down.
*[[Temperature]] - [[Photosynthesis]] works best at 30[[°C]]. Too much colder or too much warmer and [[photosynthesis]] will slow down.
*[[Carbon Dioxide]] - [[Photosynthesis]] needs [[Carbon Dioxide]]. The more [[Carbon Dioxide]], the quicker [[photosynthesis]] can happen.