You blow up a balloon.Is it heavier or lighter than the unin

You blow up a balloon.Is it heavier or lighter than the unin get a balloon and then blow it up untill it is quiet The balloon will b( )if you blow it up any more It is usually no more than a weather balloon or an airplane. 英语智力题:What is lighter than a feather,byt you can't hold it f why is it up in the sky like a balloon?怎么回答? up,the,like,balloon,why,it,in,a,is,sky连词成句 Why is a half moon heavier than the full moon? The price of a cup of coffee is lighter than ___of a glass o a is three times heavier than 英译汉Of course the big one.it is heavier than the small one. The big ball is lighter than the small one.