Answer:
blood flows through pores in the tissues
 
        
             
        
        
        
XX shows female
XY shows male
answer will be E as it is present on both genes.
        
             
        
        
        
The first step of the light
reactions, (photons)
strikes the chlorophyll in (photosystem II)
 
        
             
        
        
        
The answer is C. The brain stem controls blood circulation.