Answer:
B
Explanation:
 The changed protein connects differently, but its function doesn't change.
 
        
                    
             
        
        
        
A persons ability to transport oxygen to the body.
        
                    
             
        
        
        
Answer:Scrub your hands for at least 20 seconds. Need a timer? Hum the “Happy Birthday” song from beginning to end twice. Rinse your hands well under clean, running water.
Explanation:
 
        
             
        
        
        
Hello
_________
The answer is A. Nitrous oxide.(laughing gas)
Hope this helps