The most logical answer is that 
<span>Nathan is perseverating on the building blocks.
</span>He wants to keep playing with building blocks and he doesn't care about his sister at the moment because at that moment the only thing he cares about is building blocks and he wants to stay in the state of being intoxicated by the happiness of building blocks.
        
             
        
        
        
Answer:
Civil-military cooperation centers (CMOCs).
Explanation:
During humanitarian missions or in the war, a military force trying to stabilize the situation usually forms a meeting place for military and non-military (civil) groups. This place is used as a humanitarian relief and reconstruction activities, or can even serve as an information center regarding civilian activities in the town or region. It can also be used as a place where a temporary government is formed, which would be in function until the civilian governance returns to normal.
CMOCs were used in the Iraqi War (2003).
 
        
             
        
        
        
Answer:
primary productivity is the rate at which biomass is produced
Explanation:
I got it right
 
        
             
        
        
        
Answer:
On April 22, 1915, German forces shock Allied soldiers along the western front by firing more than 150 tons of lethal chlorine gas against two French colonial divisions at Ypres, Belgium. This was the first major gas attack by the Germans, and it devastated the Allied line.
Explanation:
 
        
             
        
        
        
Answer:
They made sure to ration and make it to where people could only buy so much.
Explanation: