B. DNA is short for <span>Deoxyribo nucleic acid, which is nucleic acid..
If this helped please rate, thank, and give brainliest answer!</span>
        
             
        
        
        
Answer:
B
Explanation:
Oxygen is the final acceptor of electrons in the process of oxidative phosphorylation. Without oxygen, the process becomes jammed with electrons.
 
        
             
        
        
        
All parts in the flowchart contribute to the breakdown of glucose and cell respiration. Without every part in the flowchart, we wouldn't be able to be alive right now. Each part in the flowchart work together. Hope this helps!
        
                    
             
        
        
        
I think the answer is B. Immigration must outpace emigration. Hope this helps!