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Aire

Aire. El aliento de vida. 8.500 metros. Semanas sin comida Días sin agua Minutos sin oxígeno. 21% oxígeno 78% nitrógeno Otros gases Vapor de agua. Purificación del aire. Contaminación del aire. Gases Ácidos Polvo Gérmenes Ozono. Ojos irritados Goteo nasal Dolor de cabeza

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Aire

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