An organism reacts to changes in its environment. this is called Behavior
        
             
        
        
        
Answer:
igneous rock 
Explanation:
Look at the chart metamorphic rock melts turning into magma magma solidifies into IGNEOUS ROCK 
 
        
             
        
        
        
This might have been the cause of not being exposed to this specific pollen during his years in Chicago. Allergic reactions can develop when the stimuli presented even when its not contagious causes the immune system to trigger and act in a defensive stance. This delayed effect may have been the cause of the sudden expression of the immune system. 
        
                    
             
        
        
        
A)  
learn about the universe and the laws of nature.  
B)  
design new scientific instruments.  
C)  
make new inventions and processes to benefit humans.  
D)  
make new scientific discoveries.
I believe the correct answer is C, but I'm 100% on this.  Hope this helped though!