The atmosphere

1)The original atmosphere might be similar to the atmosphere in jupiter.                                    
 

3)The troposphere is where all the weather takes place, it is the 

region of rising and falling packets of air.

4) In the stratosphere is where air flow is most horizontal.

5)The ozone layer is particularly  a reactive form of oxygen.

6)The ozone molecules in the atmosphere had protected  life on earth from ultraviolet rays.

7)In the ionosphere aurora takes place and is also responsible for absorbing  the most energetic photons from the sun.