wel i think there is but im not relly sure but mayb this pg wil tell u s/t cuz i got no clue n idk if this pg wil actually help u w/ nething but il keep loking 2 c if there is (http://www.worldalmanacforkids.com/WAKI-ViewArticle.aspx?pin=x-ph073300a&article_id=165&chapter_id=4&chapter_title=Environment&article_title=Photosynthesis)
