The answer is; graph A
Breathing increases during exercise because the body is demanding more oxygen for the muscles. The hypothalamus detects the increased carbon dioxide in the blood dur9ng exercise and its commands the lungs to breath faster and deeper. When exercise stops, the body is restored to resting through homeostasis. 
 
        
                    
             
        
        
        
The vertebrae protects the spinal cord
        
             
        
        
        
A possible effect of an error during transcription is the wrong amino acid chain, will be produced.
Option D
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Explanation: </u></h3>
The "wrong amino acid chain", will be produced as a possible effect of an error during transcription. A mutated set of proteins will start getting produced. They will have different or faulty functioning. In some cases, they won't have any functions of their own.
To avoid the possibility of an error, the transcript goes through a process of proofreading which further eliminates the chances of a wrong protein being developed.
 
        
             
        
        
        
When working with non-linear functions, the average rate of change is not constant.
When working with non-linear functions, the average rate of change is not constant.
Explanation:
When working with linear functions, average rate of change is constant.