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Helium is a very low narcotic gas. By adding helium, there is less nitrogen percent in the cylinder and therefore the gas being breathed is less narcotic. This allows divers to dive deeper with very little narcosis.

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โˆ™ 2012-06-06 14:02:01
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Q: Why do they use helium in deep sea scuba diving?
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What careers are there in scuba diving?

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Helium plus Oxygen plus Carbon equals?

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World record for deep sea diving?

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