Answer:
Positive feedback is most like adding wood to a burning fire to increase the heat. Positive feedback is a regenerative feedback process in which a segment of the output is combined with the input for the output to increase more.
Explanation:
Hope this helps :)
 
        
                    
             
        
        
        
Answer: Option D.
After recovery from general anesthesia.
Explanation:
Wind up in animals is a situation whereby there is increase in pain on the affected area due to high stimulus that is given above the normal level. These is caused by continuous stimulation of group c peripheral nerve fibres of the nervous system.
Wind up occur in animals after recovery from general anesthesia because the peripheral nerve fibres are continuously stimulated to cause windup.
 
        
             
        
        
        
C. Radioactivity 
is the answer 
and Uranium is an element that produces radioactivity
        
             
        
        
        
I think the answer might be glucose.