They both share the derived characteristic of a long tail, a large head, and having a back bone (or being a vertebrate).
        
             
        
        
        
It is the stalk of the plant
        
                    
             
        
        
        
Answer:
The ventricles of the heart have thicker muscular walls than the atria. This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria. ... This is due to the higher forces needed to pump blood through the systemic circuit (around the body) compared to the pulmonary circuit.
Explanation:
The Human Heart — PT Direct 
 
        
             
        
        
        
Answer:
there are two ATP molecules