shineperl143own5li shineperl143own5li

28-11-2017
Biology

contestada

Certain gases in air are important natural resources that are used in welding. Two of these gases are _____.
A.) oxygen and argon
B.) hydrogen and flourine
C.) chlorine and sulfur dioxide
D.) nitrogen and carbon dioxide

Respuesta :

123ujcodshcHCpScd 123ujcodshcHCpScd

28-11-2017

the answer Is d I ghad this question b4

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hokualohiluiowq06u hokualohiluiowq06u

28-11-2017

The answer is D. Have a nice day!

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