Pls help plz help me my friends answer these fast
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2. Oxygen
3. Carbon dioxide
4. Helium
5. atmospheric
6. Methane
7. Atmosphere
8. Air
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- nitrogen
- oxygen
- carbon dioxide
- helium
- I think smoke particles
- methane
7 atmosphere
8.air
I know that much only
hope this helps you & if yes mark me as brainliest....
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