because they float and airs lighter because they float and airs lighter
A balloon is filled with helium. Athough, it can be a chemical and physical change. For example you can take the helium out of the balloon, but you cant put it back in it now that its already in the air.
we are running out of fresh water. all the oceans are salt water, so we cant drink them
there are none balloons are hiding in you cant go in buildings
you cant. :D
Yor stomac cant digest it so it will get stock
you cant
Jaguars do not avoid water. They are good swimmers and actually seem to enjoy swimming. They often enter the water to catch caimans.
castles cant be in water although the closeest thing for it to be in water is with a moat around it and if you dont know what a moat is a moat is a place where the castle is surround with water and somethimes filled with crocdiles to help keep intruders at bay
Note that less dense objects will rise above more dense objects. I.E. Helium is denser then our atmosphere so balloons filled with it float. Simply put a cube of ice in a container of water and see if it floats. Also; you can't cant tell density by weight. A massive mountain is more dense then a twig but also a pebble is more dense then a massive log.
MUSHROOM
you cant
u cant