Carbon dioxide (CO2) is heavier than oxygen and naturally accumulates at lower levels in enclosed spaces like caves, creating a dangerous stratification where oxygen remains at higher elevations while CO2 pools at the bottom; this means that in such caves, sitting upright may allow survival by breathing oxygen-rich air, but lying down or lowering one's position can lead to suffocation as the person enters the CO2 layer.
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Deadly Cave Filled With CO2 😨Added:
Look, this is why you should never enter an unknown cave. Here this guy lit a torch and held it upward inside the cave and the flame kept burning continuously because there was oxygen above, but the moment he lowered the torch slightly, it went out instantly because the lower part was filled with CO2, meaning carbon dioxide. So, basically, if you stayed sitting in that cave, there might still be some oxygen to breathe, but the moment [music] you lay down even a little, game over.
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