Answer:
D. IV -> III -> II -> I
Explanation:
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.
 
        
             
        
        
        
Answer:
On a graph, points are grouped closely together.
I only put one answer because the choices repeat. 
 
        
                    
             
        
        
        
Answer:
sorry
Explanation:
sorry i dont know sorry for that
 
        
             
        
        
        
It's found in the chloroplast