The answer to 2-7 would be -5, but 7-2 would be 5, depends how specific one is trying to be. 
        
             
        
        
        
Answer:
right ventricle to left ventricle
Explanation:
 
        
             
        
        
        
Answer:
bio diversity is important for our planet 
 
        
             
        
        
        
They are called prokaryotic cells
        
             
        
        
        
Answer: Dermatology
Like you said, derma means skin and  having the terminology -logy <span>indicates </span><span>names of scientific fields of study. Basically, dermatology is the branch of medicine that studies skin but also studies </span>scalp, hair, and nails (because they are all associated).
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