The correct answer will be the second one Growth of a tumor
        
             
        
        
        
I don't know the real answer because you didn't attach the choices, but Adenine (A) is always paired with Thymine(T) and Guanine (G) is always paired with Cytosine (C). 
 
        
             
        
        
        
So the plant doesn't freeze (; that was easy
        
             
        
        
        
Answer:
Chemiosmosis
Explanation:
The electrons from from NADH and FADH2 pass through the electron transport chain in the mitochondria, donating their electrons and generating a H+ buildup. This generates a proton pump to power ATP synthase. This process is called chemiosmosis.
 
        
                    
             
        
        
        
Answer: the brain scans showed that there were areas of damage in the brains of all but one of the Mexico City kids. The damage was caused by air pollution.