Answer:
It will determine the number of molecules of the particular chemical in the compound.
 
        
                    
             
        
        
        
Humans obtain nitrogen by eating other organisms.
        
                    
             
        
        
        
I think it would be either A or B but I am not sure.... If anything I think I would go with A.
Hope this helps 
        
             
        
        
        
<span>Most people's urine is darker in the morning as the kidneys work hard during the night to remove impurities and the urine is more concentrated.</span>
        
             
        
        
        
Answer:
D. Oxygen
Explanation:
Plants absorb carbon dioxide (CO2) and release oxygen for humans and animals to breathe in. Afterward, they'll release CO2 for plants to absorb, which forms a cycle.