They are natural disasters. 
        
             
        
        
        
Answer:
Because amino acids can be arranged in many different combinations, it's possible for your body to make thousands of different kinds of proteins from just the same 21 amino acids. You may see books that say there are only 20 amino acids. 
 
        
             
        
        
        
Gravitational pull is measured in G's
        
             
        
        
        
Warm blooded animals are much stronger and like aligators , reptiles and different warm blooded animals
        
             
        
        
        
I think that’s substitution