A balloon collapses when air is removed from it. This happens because:

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A The air pressure inside the balloon is lower than outside.
B The air pressure outside the balloon is higher than inside.
C The air pressure inside is greater than outside.
D Both A and B.

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Answer: D. Both A and B.

When air is removed from inside, the pressure inside drops. The surrounding atmospheric pressure exerts a higher force outside, causing the balloon to collapse.

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A balloon collapses when air is removed from it. This happens because:

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