I dont know how to answer this question because not enough context is provided
        
             
        
        
        
Answer:
It is a serious/grave or even a heroic mood
Explanation:
Because: He will always be remembered as the drummer boy of Shiloh this adds a melancholy almost mood.
 
        
             
        
        
        
Answer:Most water you see flowing in rivers comes from precipitation runoff from the land surface alongside the river. Of course, not all runoff ends up in rivers. Some of it evaporates on the journey downslope, can be diverted and used by people for their uses, and can even be lapped up by  animals.
Explanation:
 
        
                    
             
        
        
        
A moment of having an idea or a sudden moment of realization.
        
                    
             
        
        
        
You can see the love this father has for his son. 
The abstract noun in this sentence: love.