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2024-01-24 18:36:40

Kim on Nostr: When there were 35 students writing the test the CO2 was around 1200 ppm. Now there ...

When there were 35 students writing the test the CO2 was around 1200 ppm. Now there are two students left. Check the CO2 in photo 

Levels starting at 1000 ppm start to interfere with cognitive function. Just saying

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