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2 votes
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

2 Answers

2 votes
The answer is D. Have a nice day!
User Tudor Timi
by
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6 votes

the answer Is d I ghad this question b4


User Jeson Martajaya
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