fall & rise.. The initial compensating response to an acute respiratory alkalosis is a modest decline in ECF bicarbonate concentration as the result of cellular buffering. Subsequent renal responses result in decreased ECF bicarbonate concentration through reduced renal bicarbonate reabsorption. 
 
        
             
        
        
        
Impulses from nerves in brain to nerves in body through spinal cord
        
                    
             
        
        
        
I thinks its c but i am not 100% sure
        
                    
             
        
        
        
b. radioactivity
The process by which atomic nuclei spontaneously decay is called radioactive decay. Explanation : This is also known as nuclear decay on a general basis In this process of radioactivity the unstable atomic nucleus loses energy .
 
        
             
        
        
        
Answer:
The odds that this sequence would appear in a random chain of DNA is one out of two thousand and forty-eight.
Explanation: