Uranus and Jupiter both have rings, both have moons, but they are mostly gas planets, and both have some methane. I think id.k if that helped
 
        
             
        
        
        
Answer:
I think there is no life in tbe universe accept the earth.
Explanation:
 
        
             
        
        
        
The stability of atoms depends on whether or not their outer-most shell is filled with electrons.  If the outer shell is filled, the atom is stable.  Atoms with unfilled outer shells are unstable, and will usually form chemical bonds with other atoms to achieve stability.
        
             
        
        
        
What exercise? Post a picture of it.
 
        
             
        
        
        
B. Radiologist 
Happy to help :)