The CNS involves the brain and spinal cord and the PNS involves the body nerves.
        
                    
             
        
        
        
Trophic cascades are powerful indirect interactions that can control entire ecosystems
        
                    
             
        
        
        
Answer:
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Pyruvic acid binds with Coenzyme A (CoA) to form acetyle CoA. The acetyle CoA begins the Kreb Cycle.