What are the
Earth's atmosphere in order from most abundant to least abundant?

Question

What are the 
 Earth's atmosphere in order from most abundant to least abundant?

anonymous · Answer

Hello?

justuu · Answer

might help http://en.wikipedia.org/wiki/Abundance_of_the_chemical_elements

anonymous · Answer

1. Nitrogen or N2 is 78.08% 
2. Oxygen or O2 is 20.95% 
3. Water or H2O is 0 to 4% 
4. Argon or Ar is 0.93% 
5. Carbon Dioxide or CO2 is 0.0360% 
6. Neon or Ne is 0.0018% 
7. Helium or He is 0.0005% 
8. Methane or CH4 is 0.00017% 
9. Hydrogen or H2 is 0.00005% 
10. Nitrous Oxide or N2O is 0.00003% 
11. Ozone or O3 is 0.000004%