It is called the synaptic cleft
        
             
        
        
        
Mouth, esophagus, stomach, small intestine, large intestine and anus
        
             
        
        
        
Growth,cellular differentiation and morphogenesis
        
             
        
        
        
<span>dihybrid cross i think would be the best answer for this question </span>
        
             
        
        
        
In humans, oxygen is delivered to the cells of the body by the circulatory system.
Hope this helps !
Photon