EQ # 6: What are the components of Earth’s atmosphere?

Gases in Earth’s atmosphere:

1)      nitrogen- 78%

2)    oxygen- 21%

3)    trace gases- argon, carbon dioxide, neon, helium, methane, krypton, hydrogen

4)    water vapor- in moist air

Solids in our air:

          Examples: pollen, dust, soot, smoke, salt