photosynthesis, carbon dioxide

Carbon dioxide is needed in photosynthesis.

Experiment to show that carbon dioxide is need in photosynthesis is acommon experiment in science. You can findthe procedure of this experiment in many text books. You can also refer to the procedure of the followingwebpage :

http://www.sciencefairadventure.com/ProjectDetail.aspx?ProjectID=87

To Kingon :

究竟你知唔知光合作用用定係唔用二氧化碳？

你嗰段嘢究竟想噏乜？

你可以用一個SET-UP.係有一條長TUBE.之後用整一個BUBBLE,再+D CO2,因為CO2 slightly dissolve in water,so佢會佔空間,咁如果有用CO2的話,個BUBBLE會MOVE,咁根據個刻度仲可以知道用左幾多CO2添.