How Does An Atmosphere Become Oxygen Deficient?

1.	How Does An Atmosphere Become Oxygen Deficient?
Answer» Generally this means less than 19.5% oxygen. OSHA exceptions to this are based on altitude and CONCENTRATION. The condition could exist for several REASONS: COMBUSTION from fire, cutting TORCHES, and welding arc; Inert gases like nitrogen displacing the oxygen; ROTTING organic matter consumes oxygen; and Rusting of metals consumes oxygen. Generally this means less than 19.5% oxygen. OSHA exceptions to this are based on altitude and concentration. The condition could exist for several reasons:

Answer»

Generally this means less than 19.5% oxygen. OSHA exceptions to this are based on altitude and CONCENTRATION.

The condition could exist for several REASONS:

Generally this means less than 19.5% oxygen. OSHA exceptions to this are based on altitude and concentration.

The condition could exist for several reasons:

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