They base it on experiences with people they have had in the past
        
                    
             
        
        
        
Answer:
lght I'll help you with whatever you need if I know it of course
 
        
                    
             
        
        
        
It pumps the blood in and out of the heart. If I remember right I think that’s it.
        
             
        
        
        
Answer:
The organ of the respiratory system are Nose, Trachea,Bronchus,Larynx,Paranasal sinuses,Lung,Pulmonary,alveolus,Pharynx,Bronchiole,Nasal cavity,Epiglottis,diaphragm
 
        
             
        
        
        
Answer:
he could injure or pull a muscle