C. chemical digestion. sorry if I am wrong
        
                    
             
        
        
        
When preparing food, wearing jewelry is safe. 
        
             
        
        
        
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<span>one example would be catabolic reactions... cellular respiration is a simple one. The food is bonded chemically and when we break them apart, it releases energy. </span><span>it's such a broad question and it's hard to really say, because it's biochemistry and it all connects and builds... if that makes sense? </span>