Answer: The new pressure is 3 psi.
Explanation:
Given: 
 = 12 psi,         
 = ?,          
Formula used is as follows.

Thus, we can conclude that the new pressure is 3 psi.
 
        
             
        
        
        
-Positively charged nucleus 
-Empty spaced
-Dense core
        
             
        
        
        
Answer:
semipermeability
Explanation:
 partially but not freely or wholly permeable specifically : permeable to some usually small molecules but not to other usually larger particles a semipermeable membrane.
 
        
             
        
        
        
Answer:
pineal body is a vastigious structure which signifies same origin of chimpanzee and modern man
Explanation: