How the law of conservation of matter is supported by the experimental demonstrations?

i need the answer in a paragraph

The law of conservation of matter states that matter cannot be created nor destroyed. It can only be transformed from one form to another. To state an example where this is shown, let's say a piece of paper is burning. Not having a scientific background, you would say that the matter is being destroyed. But in reality, the paper is simple being transformed to ash, carbon dioxide, and water vapor. Overall, the total mass would still remain the same.

Because the sun is the biggest and if the sun orbits the earth we will be dead probably