H ( hydrogen ) is the answer I believe.
        
                    
             
        
        
        
It could them know how it start when it started wats in the infectious disease and why
        
             
        
        
        
Answer:the answer is moles
Explanation: joules are measurements of energy, and moles Joules
 
        
             
        
        
        
From a Chemistry perspective it is the electron at 1/1800th the mass of a proton or neutron.
        
                    
             
        
        
        
Earths magnetic field is formed mostly by 
B. SOLAR WIND