Shops occupied and unoccupied
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Answer:
HOWHIGH CAN BALLOON FLY?
Explanation:
The all-time record for hot air balloons is about 20,000 meters – or roughly 65,000 feet – set in 1988 by Per Lindstrand of the United Kingdom. The record for helium balloons is even more impressive. Helium balloons rise because helium is lighter than the surrounding air.
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