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No; that is why it is called shrink wrap.
No it decreases
As long as they have flue to heat the balloon.
The fact that the balloon is so light allows it to stay afloat,
invisible string
balloon stay up because of the air inside it. to make the balloon stay up the air should be light. inside the balloons you can find the air we called helium. helium is a light air that makes the balloon stay up. that's why if you blow the balloon it wont float because the air that comes from your mouth is not helium but carbon dioxide and carbon dioxide is heavier compared to helium so it wont float.
no
the buoyancy
the buoyancy
water....if you would survive in a balloon you would have no space to stay in there
The question is not well-formed. Similar questions may include: How many minutes does a helium balloon stay aloft? How long does a hot air balloon stay aloft? How long does a particular rocket motor burn?
Yes