Question

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

Answer 1

Hello?

Answer 2

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

Answer 3

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%