The only reason plants require carbon dioxide is so that they can photosynthesise. This process allows the plant to convert light energy from the sun into chemical energy. This process also make two other products which are oxygen and glucose sugar.
vegetation catch the ability in gentle by using a technique observed as photosynthesis. This technique makes use of carbon dioxide and produces oxygen. So vegetation take up carbon dioxide mutually as freeing oxygen looking on the quantity of sunshine they receive.
Yes, the only time plants don't use CO2 is when its very humid out...They close the stomata to prevent water loss. Yes, light is necessary. For one, light is a primary source of energy next to glucose. Which plants are made of.