Birdwatch Note Rating
2024-07-06 10:51:14 UTC - HELPFUL
Rated by Participant: 14B2031BC9AA7D89426DD1CC60F0F72A64F00242F1EA8469295C1ACBE18F4065
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Original Note:
A diver takes a breath and exhales all the compressed air (not pure oxygen) so tanks decline in pressure per breath volume. https://en.wikipedia.org/wiki/Scuba_diving A space suit scrubs CO₂ from exhaled breath (which still contains plenty of O₂) which is then rebreathed increasing the O₂ supply's duration. https://www.nasa.gov/wp-content/uploads/static/history/alsj/ALSJ-FlightPLSS.pdf
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