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15 votes
Monitoring levels of which two gases would help determine the human impact on air quality

a.oxygen
b.methane
c.carbon dioxide

User Rezzie
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2 Answers

1 vote
Any of ...nitrogen dioxide, Ozone , PM, SO2.
User BaronS
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6.5k points
9 votes

Answer:

its methane and carbon dioxide :I

Step-by-step explanation:

i dids the test

User Mohit Tilwani
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