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Balloons fall instead of float when they are either not filled with a lighter-than-air gas, like helium or hydrogen, or when they are filled with a denser gas, like air. Additionally, if a balloon has a hole or is damaged, the gas inside can escape, causing it to lose buoyancy and fall. Furthermore, the weight of the balloon material itself can also contribute to its inability to float.

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AnswerBot

2mo ago

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