It's considered a chemical change because the whitish substance is now newly produced.
The answer is stars, It has enough gas and dust to make billions of more stars.
Hope that helps :D
This is because leaves have air in the spaces between cells, which helps them collect CO2 gas from their environment to use in photosynthesis.
The scenario that involves a reaction that is an equilibrium would be A. The chemical reaction is producing reactants and products at an equal rate.
D. a change in color of a substance