They might go extinct if they can't keep up with the competition
        
             
        
        
        
<span> overvalue their physical appearance, weight, and body shape. </span>
        
             
        
        
        
The double helix unwinds and each strand forms a template for a new strand — I’m pretty sure!
        
             
        
        
        
Answer:
common ancestor. ... Mammals share the homologous structure of the vertebrae in common.
Explanation:
 
        
             
        
        
        
Answer:Planarians = flatworms
Marine worms = segmented worms
Pinworms = roundworms
Tapeworms = flatworms
Explanation:
I’m Built Different