In the summer, trees thrive on the nutrients the sunlight gives them. In the winter, their leaves change colors and they start to perish. Then, with a little bit of sunlight ad water, they can thrive again. Stars also start to perish at some point, but they do not thrive again. They continue perishing until they implode.
The reason why the reaction written on the picture can be classified as a synthesis reaction is : the reaction shows one compound that formed from two compounds
it doesnt take part in chemical reaction so its not reactant.02 doesnt alter rate of chemical reaction so it cannot be catalyst. it is gas it is not solid so it is a product.
