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Air is a mixture of various gases. One of the gases is 21% part of the air and is essential for the survival of human beings. This gas is​

Respuesta :

SLS102103

Answer:

Oxygen

Explanation:

Oxygen is 21% of the gases that make up our air

mac205

Answer:

oxygen

Explanation:

Nitrogen is 78%

oxygen is 21%

carbon dioxide is 0.02%

and water vapour and sometime Noble gas varies