They use different genetic codes
        
             
        
        
        
The heart is beneath the breastbone in the chest cavity of the frog
        
             
        
        
        
Answer:
carbon, hydrogen, nitrogen and oxygen 
Explanation:
mostly, combination of carboxylic and amine groups
 
        
             
        
        
        
Answer:
White
Immune
Explanation:
White blood cells, also called leukocytes, are one of the cells that are involved in the body's immune system. They protect the body against various infections diseases and other invaders. Leukocytes are produced in the bone marrow (hematopoietic stem cells). They are not the only cells that are important for the defense of the body but are important.