This model is about how the tree changes its leaf color in different weather during autumn. The Sun causes the chlorophyll to die fast, so the color changes. A lot of wind can even cause green leaves to fall. Rain can make the leaves fall too. I want to see if I can move the sun at different times, so then the leaves facing the sun will be more vulnerable. Also, I want to add day and night so the temperature changes. This will some how affect the tree.