<span>the answer would be animals can produce and have fertile offspring </span>
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Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. It starts in the esophagus where strong wave-like motions of the smooth muscle move balls of swallowed food to the stomach.
        
                    
             
        
        
        
Explanation:
The valence electrons determine the group the elements belong in the periodic table. For example, the element sodium, Na, has a valence electron of one and so it belongs to Group 1 in the periodic table. Another example is Aluminium, Al, which has a valence electron of three and therefore it belongs to Group 3 in the periodic table.
 
        
             
        
        
        
Answer:
 External Acoustic Meatus occurs in the temporal bone
Explanation:
 External Acoustic Meatus is also known as external auditory canal. This canal is circular in structure and contains cartilage, bones, ceruminous gland.
 External Acoustic Meatus is located on the temporal bone. This bone is located on the the lateral side and the base of the skull. Four parts of temporal bone are mastoid, squamous, tympanic and petrous.