For continued survival
animals gotta eat
        
             
        
        
        
In the medical profession, understanding the body position, direction and planes creates a common ground for the professionals to communicate in their work. For instance, if a nurse write down a medical note concerning a patient, the doctor will know exactly the part of the body that the nurse is referring to in her notes. It also makes it easy for doctors and nurses to diagnose the parts of the body where their patients are having problems. Thus, knowledge of human anatomy provides uniformity and precision in structures identification.
        
                    
             
        
        
        
The cell wall is the outside layer of the cell whereas the cell membrane is surrounds the cytoplasm of the cell.
        
                    
             
        
        
        
The answer would be 36, you just fill in what you know and solve the problem.