" Well, I use two balloons so it's easier for the others to see how it haver then air. I will put dry ice in the bottle, and pour a little water over it. I will inflate the balloon with the bottle, and once it is all blowed up. I will remove it, and tie it. I will just blow the other balloon up by me using sir from my lungs when I blow it up.  Then I will throw both of them on the air. The carbon dioxide one should fall first on the ground, then the one I blew up. " Aurora said.<br/><br/>Tom begin to help the other kids. He helped them with their homework. He didn't mind doing so as he did like to help others out. Not everyone could finish the assignment with ease.