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1.Can fly to the altitudes of modern airliners (around 10 000 meters or 32808 ft). Take a look at this graph: At 10,000 meters, the air pressure is about 25% of its value at sea level. Wiki...
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2020-06-01T14:13:42Z (over 4 years ago)
Source: https://worldbuilding.stackexchange.com/a/8966 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/