Plz answer and don’t take up any answer spots

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.

How many pounds does the earth weigh?

Why is it bad that some cancer cells can make their own growth hormones?