I’m going to say for the first one it’s a
        
             
        
        
        
Mollusks
Mollusks is the group of invertebrates that made up the majority of the Marine species. Their bodies tend to not divided into segments like other organisms.
 
        
             
        
        
        
Answer:
I think it would be B: Our brains add details and general knowledge to childhood memories.
Sorry if its not correct
Explanation:
 
        
             
        
        
        
I think maybe the nephrons ...but not sure...
        
             
        
        
        
Explanation:
A change of the form or nature of a thing or person into a completely different one, by natural or supernatural means.